{"title":"Reagents","description":"\u003cp\u003eBioSystems’ reagents are manufactured under stringent quality standards and have a long shelf life, so you can make full use of your quality control investment. BioSystems offers more than 30 enzymatic and colorimetric kits for organic acids, sugars, sulfites, phenolics, and more.\u003c\/p\u003e\n\u003cp\u003eWith dependable lot-to-lot consistency and compatibility with supported analyzers, these reagents help labs maintain confidence in their results while improving operational efficiency. In addition to AOAC, ISO and OIV validation, BioSystems’ kits are validated with reference laboratories around the world as well as with in-house QC validation.\u003c\/p\u003e","products":[{"product_id":"glucose-fructose-reagent-kit","title":"D-Glucose \/ D-Fructose, reagent kit for wine, cider, beer and kombucha","description":"\u003cp\u003e\u003cstrong\u003eEnzymatic method for D-glucose \/ D-fructose determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 120\u003cspan\u003e \u003c\/span\u003eml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 340 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 8 g\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: D-Glucose: 0.03 g\/l. D-Glucose \/ D-Fructose: 0.02 g\/l\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eWorking reagent stable until the expiration date\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis test indicates the best moment for grape harvesting and allows alcoholic fermentation to be monitored. It is widely used to determine the dryness of the wine before bottling.\u003c\/p\u003e\n\u003cp\u003eD-fructose and D-glucose in the sample generate NADH (by the following reaction), which can be measured by spectrophotometry. The configuration of these reagents allows D-glucose\/D-fructose (total sugars) to be determined if the enzyme PGI is added or D-glucose to be determined if it is not.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005136\/12800\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"admeo","offers":[{"title":"Default Title","offer_id":31941904957506,"sku":"12800","price":303.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/D-Glucose_D-Fructose.jpg?v=1751388702"},{"product_id":"d-lactic-acid-reagent-kit","title":"D - Lactic Acid, reagent kit for wine","description":"\u003cp\u003e\u003cstrong\u003eEnzymatic method for D-lactic acid determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 100 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 340 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 0.25 mg\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 0.004 g\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe excess of bacteria that are producing D-Lactic acid can inhibit alcoholic fermentation, converting some sugars into D-lactic acid. This is one of the main problems in the wine- making process. Levels above 0.3 g\/L of D-lactic acid indicate bacterial contamination.\u003c\/p\u003e\n\u003cp\u003eD-lactic acid in the sample yields NADH (by the following reaction), which can be measured by spectrophotometry.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005246\/12801\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139896459330,"sku":"12801","price":483.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/D-Lactic_Acid_Kit.jpg?v=1751557781"},{"product_id":"l-lactic-acid-reagent-kit","title":"L-Lactic Acid, reagent kit for wine, kombucha, beer and juice","description":"\u003cp\u003e\u003cstrong\u003eEnzymatic method for L-lactic acid determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 100 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 340 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 3000 mg\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 0.02 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eL-lactic acid is the product of the metabolism of malic acid during the malolactic fermentation. L-lactic acid is perceived as less acidic and softer on the palate compared to malic acid.\u003c\/p\u003e\n\u003cp\u003eL-lactic acid in the sample yields NADH (by the following reaction), which can be measured by spectrophotometry.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005362\/12802\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139896492098,"sku":"12802","price":346.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/L-Lactic_Acid_82a2854a-fcfd-4f18-971f-53b88c579111.jpg?v=1751405052"},{"product_id":"l-malic-acid-reagent-kit","title":"L-Malic Acid","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eEnzymatic method for L-malic acid determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 100 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 340 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 4 g\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 16 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eStable working reagent for 4 months\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eL-malic acid is responsible for the sharply acidic, green apple flavor in wine. It’s fermentation yields L-lactic acid and causes perceived acidity to soften.\u003c\/p\u003e\n\u003cp\u003eL-malic acid in the sample yields NADH (by the following reaction), which can be measured by spectrophotometry. The equilibrium of this reaction moves toward L-malic acid formation. The enzyme glutamate-oxaloacetate transaminase (GOT) causes the equilibrium to shift by eliminating oxaloacetate, which is converted into L-aspartate in the presence of L-glutamate.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005919\/12803\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31942664781890,"sku":"12803","price":213.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/L-Malic_Acid.jpg?v=1751404687"},{"product_id":"total-sulfite-reagent-kit-200-ml","title":"Total Sulfite","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eColorimetric analysis for total sulfite determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 200 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 405 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 400 mg\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 1 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSulfite is the main preservative of wines and musts, due to its antiseptic properties on yeasts and bacteria; it also has antioxidant properties. According to Council Regulation (EC) No 1493\/1999 and Council Regulation (EC) No 1622\/2000, the sulfur dioxide content of wine is limited, as it is considered to be a slightly toxic substance from the point of view of its effects on human physiology.\u003c\/p\u003e\n\u003cp\u003eTotal sulfites in the sample react with 5-5’-dithio-2-nitroben- zoic (DTNB) acid in basic medium. Cleavage of the disulfide bond (R-S-S-R) of DTNB by a sulfite molecule yields the 5-mercaptan- 2-nitrobenzoate molecule, which absorbs at 405 nm. The color increase of the sample is directly proportional to the total sulfite concentration of the sample.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005612\/12806\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139896557634,"sku":"12806","price":225.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Total_Sulfite_Kit.jpg?v=1751404455"},{"product_id":"pan-reagent-kit","title":"Primary Amino Nitrogen (PAN)","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eColorimetric analysis for primary amino nitrogen determination\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 100 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 340 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 400 mg\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 1 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003eStable working reagent for 12 months\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNitrogen compounds (molecules containing a primary amine nitrogen) in must and wine play a key role in fermentation and the potential of microbial stability.\u003c\/p\u003e\n\u003cp\u003eAny molecules in the sample that contain a primary amino nitrogen react with o-phthaldialdehyde (OPA) in the presence of a reducing agent in basic medium, yielding a chromogen that is assayed spectrophotometrically.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0004079\/12807\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139896590402,"sku":"12807","price":274.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/PAN_Kit.jpg?v=1751404194"},{"product_id":"tartaric-acid-reagent-kit","title":"Tartaric Acid","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eColorimetric analysis for tartaric acid determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 100 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 520 nm\u003c\/li\u003e\n\u003cli\u003eMeasurement range: 0.06 to 6 g\/l\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 60 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTartaric acid is the main acid of wine that can become insoluble, forming various salts. This acid produces the fruity aromas and freshness of wines and is the most commonly used acidifier.\u003c\/p\u003e\n\u003cp\u003eAny tartaric acid in the sample reacts with vanadium salt in acidic medium, forming a colored complex that is assayed by spectrophotometry.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005662\/12808\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139896623170,"sku":"12808","price":148.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Tartaric_Acid_Kit.jpg?v=1751403912"},{"product_id":"ammonia-reagent-kit","title":"Ammonia, Reagent Kit for Wine","description":"\u003cp\u003e\u003cstrong\u003eEnzymatic method for ammonia determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 100 ml, all liquid format\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 340 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: \u003cmeta charset=\"utf-8\"\u003e200 ml\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: \u003cmeta charset=\"utf-8\"\u003e3.0 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLow nitrogen levels have been related to slow fermentation or sulfide production. Conversely, high levels can lead to micro- bial instability and production of ethyl carbonate.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005436\/12809\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139896655938,"sku":"12809","price":197.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Ammonia_kit.jpg?v=1751403661"},{"product_id":"d-gluconic-acid-reagent-kit","title":"D-Gluconic Acid \/ D-, reagent kit for wine","description":"\u003cp\u003e\u003cstrong\u003eEnzymatic method for D-gluconic acid \/ D-gluconolactone determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 100 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 340 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 2 g\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 3 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eD-gluconic acid is an indicator of grape deterioration and sanitary condition.\u003c\/p\u003e\n\u003cp\u003eD-gluconic acid in the sample yields NADPH (by the fol- lowing reaction), which can be measured by spectrophotometry.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0004759\/12811\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139896754242,"sku":"12811","price":502.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/D-Gluconic_Acid_D-_Kit.jpg?v=1751557529"},{"product_id":"glycerol-reagent-kit","title":"Glycerol, reagent kit for wine","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eColorimetric analysis for glycerol determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 100 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 500 +\/- 20 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 20 g\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 240 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eGlycerol is an indicator of the quality of finished wine and is extremely important for the mouthfeel. High glycerol concentrations add sweetness, body and fullness to the wine.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eGlycerol in the sample yields (by the following reaction), a colored complex that is assayed by spectrophotometry. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005275\/12812\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139896787010,"sku":"12812","price":101.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/GlycerolBoxandReagents.jpg?v=1739390295"},{"product_id":"free-sulfite-reagent-kit","title":"Free Sulfite, reagent kit for wine and cider","description":"\u003cp\u003e\u003cstrong\u003eColorimetric analysis for free sulfite determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 250 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 670 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 150 mg\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 3 mg\/l (ppm)\u003c\/li\u003e\n\u003cli\u003eShelf life: 36 months\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMost sulfur dioxide added to the must or wine combines with different organic compounds. This is the predominant fraction in wine; however, there is another fraction that is not combined, namely, free SO2. Although it is present in lower amounts, its antiseptic and antioxidant properties are superior to those of combined sulfite.\u003c\/p\u003e\n\u003cp\u003eFree sulfite in the sample reacts with 4,4’-(4-iminocyclo- hexa-2,5-dienylidenemethylene) dianiline chromogen (pararosaniline; PR) and formaldehyde (F) in acid medium. In a second reaction, free sulfite is removed by oxidation and the rest of substances (I) that are able to react with the chromogen are measured. The difference between the results obtained from the two reactions is the free sulfite concentration.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005733\/12813\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139896819778,"sku":"12813","price":174.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Free_Sulfite.jpg?v=1751390622"},{"product_id":"copper-reagent-kit","title":"Copper, reagent kit for wine","description":"\u003cp\u003e\u003cstrong\u003eColorimetric analysis for copper determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 100 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 560 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 7 mg\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 0.4 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCopper is a metal that clearly originates in the process of vinegrowing. The main source is phytosanitary treatments of vineyards to prevent mildew. During harvest, the copper content may be 4 to 6 mg\/L. During fermentation its concentration decreases to 0.2-0.3 mg\/L due to the formation of copper sulfides or the presence of yeasts that fix the copper contained in the medium.The OIV has set a maximum acceptable limit of copper of 1 mg\/L.\u003c\/p\u003e\n\u003cp\u003eAny copper in the sample reacts with 4-(3,5-dibromo-2- pyr- idylazo)-N-ethyl-N-sulfopropylaniline (PAESA). The color in- crease is directly proportional to the copper concentration of the sample.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0004943\/12814\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139896852546,"sku":"12814","price":197.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Copper.jpg?v=1751403421"},{"product_id":"polyphenols-reagent-kit","title":"Polyphenols","description":"\u003cp\u003e\u003cstrong\u003eColorimetric analysis for polyphenols determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 80 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent end point at 670 or 750 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 3000 mg\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 60 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePhenol components significantly enhance the antioxidant properties, color and mouthfeel of red wines. The importance of these phenol components in sensory perception requires assay at all stages of the winemaking process.\u003c\/p\u003e\n\u003cp\u003eAny polyphenols in the sample react with Folin-Ciocalteu’s reagent in basic medium. The color increase is directly proportional to the polyphenols concentration of the sample.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005794\/12815\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139896885314,"sku":"12815","price":93.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Polyphenols_Kit.jpg?v=1751557307"},{"product_id":"color-reagent-kit","title":"Color, reagent kit for wine, cider, kombucha and beer","description":"\u003cp\u003e\u003cstrong\u003eColorimetric analysis for color determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 80 ml\u003c\/li\u003e\n\u003cli\u003eMethod: End-point mono reagent at 420, 520 and 620 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 18 (A420, A520 and A620)\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 0.113 (A420, 0.144 (A520) and 0.121 (A620)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWine color plays a major role in the impression of quality. Color is also an important indicator in many winemaking pro- cesses. Regular use of this test allows enologists to docu- ment and confirm their own impressions.\u003c\/p\u003e\n\u003cp\u003eThe wine sample is diluted in a buffer solution that does not alter color-related properties. Absorbance reading at 420 nm, 520 nm and 620 nm allows the chromatic characteristics to be calculated.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0000179\/12816\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139896918082,"sku":"12816","price":62.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Color_kit.jpg?v=1751497054"},{"product_id":"iron-reagent-kit","title":"Iron, reagent kit for wine","description":"\u003cp\u003e\u003cstrong\u003eColorimetric analysis for iron determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 100 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 560 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 30 mg\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 0.1 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMetal components in wine can originate in grapes or the machinery used to make wine. A high iron content can cause clouding due to a lack of solubilization, thus affecting the color and clarity of the wines.\u003c\/p\u003e\n\u003cp\u003eAny iron in the sample reacts with 3-(2-pyridyl)-5,6-bis (4-phenylsulfonic)-1,2,4-triazine (ferrozine) sodium salt in acidic medium and in the presence of a reducing agent. The color increase is directly proportional to the iron concentration of the sample.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005010\/12817\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139896950850,"sku":"12817","price":94.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Iron_Kit.jpg?v=1751403235"},{"product_id":"multical","title":"Multical","description":"\u003cp\u003e\u003cstrong\u003eMulti parameter calibrator at 5 concentration levels for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAcetic Acid, Ammonia, Citric Acid, D-Gluconic Acid\u003c\/li\u003e\n\u003cli\u003eD-Glucose, D-Glucose\/D-Fructose, Glycerol, D-Lactic Acid\u003c\/li\u003e\n\u003cli\u003eL-Malic Acid, PAN, Sucrose\/D-Glucose\/D-Fructose\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMULTICAL is a multiparameter calibrator with five synthetic matrix liquid levels (5 x 10 mL). It contains various analaytes at adequate concentrations for the calibration of the measurement procedures.\u003c\/p\u003e\n\u003cp\u003eThe traceability of the results in samples to reference materials or systems of higher metrological hierarchy is only ensured when the reagents and measurement procedures recommended by BioSystems are used.\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"https:\/\/einfo.bio\/0004188\/12818\/en\" target=\"_blank\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv title=\"Page 22\" class=\"page\"\u003e\n\u003ctable style=\"width: 100.087%;\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 26.9611%;\"\u003e \u003ccol style=\"width: 19.0984%;\"\u003e \u003ccol style=\"width: 10.3327%;\"\u003e \u003ccol style=\"width: 10.3327%;\"\u003e \u003ccol style=\"width: 10.5079%;\"\u003e \u003ccol style=\"width: 10.1576%;\"\u003e \u003ccol style=\"width: 10.5079%;\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eParameter \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eU \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e1 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e2 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e3 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e4 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e5 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eAcetic acid \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eg\/L 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class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e1,20 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eAmmonia \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003emg\/L \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e23 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e45 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e90 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e135 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e180 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eCitric acid \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003emg\/L \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e45 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e90 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e180 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e270 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e360 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eD-Gluconic Acid \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eg\/L \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e0,20 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e0,40 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e0,80 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e1,20 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e1,60 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eD-Glucose \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eg\/L \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e0,90 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e1,80 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e3,60 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e5,40 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e7,20 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eD-Glucose\/D-fructose \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eg\/L \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e0,90 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e1,80 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e3,60 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e5,40 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e7,20 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eGlicerol \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eg\/L \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e0,113 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e0,225 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e0,450 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e0,675 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e0,900 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eÁcido D-láctico \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003emg\/L \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e0,028 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e0,056 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e0,113 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e0,169 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e0,225 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eÁcido L-láctico \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eg\/L \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e0,34 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e0,68 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e1,35 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e2,03 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e2,70 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eÁcido L-málico \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eg\/L \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e0,45 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e0,90 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e1,80 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e2,70 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e3,60 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003ePAN \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003emg\/L \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e45 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e90 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e180 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e270 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e360 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eSuc.\/D-gluc.\/D-fruc. \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eg\/L \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e0,90 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e1,80 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e3,60 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e5,40 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e7,20 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139896983618,"sku":"12818","price":157.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Multical_Kit.jpg?v=1751558125"},{"product_id":"sucrose-reagent-kit","title":"Sucrose \/ D-Glucose \/ D-Fructose","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eEnzymatic method for sucrose or Sucrose \/ D-Glucose \/ D-Fructose determination\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 60 ml\u003c\/li\u003e\n\u003cli\u003eMethod: End-point\/two-reagent differential, reading at 340 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: Sucrose 4 g\/l, Sucrose\/D-Glucose\/D-Fructose, 8 g\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: Sucrose 80 mg\/l, Sucrose\/D-Glucose\/D-Fructose, 70 mg\/l\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003eStable working reagent for 12 months\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrecise analysis of sucrose or total sugar is important for many winecellars in two winemaking operations. Sparkling wine (cava, champagne, etc.) production: adding sucrose once alcoholic fermentation has been carried out in order to achieve a secondary fermentation that produces CO2, which is retained in the wine.\u003c\/p\u003e\n\u003cp\u003eSucrose, D-fructose and D-glucose in the sample generate NADPH (by the following reaction), which can be measured by spectrophotometry.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005639\/12819\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897016386,"sku":"12819","price":158.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Sucrose_D-Glucose_D-Fructose_Kit.jpg?v=1751403021"},{"product_id":"acetaldehyde-reagent-kit","title":"Acetaldehyde, Reagent Kit for Wine and Beer","description":"\u003cp\u003e\u003cstrong\u003eEnzymatic analysis for acetaldehyde determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 50 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 340 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 200 mg\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 0.1 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable working reagent for 3 weeks\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAcetaldehyde is one of the components of the oxidative chain of alcoholic fermentation. Acetaldehyde is also formed in the wine aging process by ethanol oxidation. Acetaldehyde con- centration is closely related to SO2 content. This combination is responsible for antioxidant activity.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0003508\/12820\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897049154,"sku":"12820","price":332.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Acetaldehyde_Kit.jpg?v=1761239363"},{"product_id":"control-wine-white","title":"Control Wine, White","description":"\u003cp\u003e\u003cstrong\u003eMultiparameter calibrator\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eControl White Wine is a wine (10 x 5 mL) that contains various components at adequate concentrations for quality control in laboratories. The product is designed for intra-laboratory quality control and is supplied with acceptable value intervals.\u003c\/p\u003e\n\u003cp\u003eTraceability is only ensured when the reagents and measurement procedures recommended by BioSystems are used.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005770\/12821\/en\" rel=\"noopener\" target=\"_blank\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897114690,"sku":"12821","price":87.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Wine_Control_White.jpg?v=1751402565"},{"product_id":"control-wine-red","title":"Control Wine, Red","description":"\u003cp\u003e\u003cstrong\u003eMultiparameter calibrator\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eControl Red Wine is a wine (10 x 5 mL) that contains various components at adequate concentrations for quality control in laboratories. The product is designed for intra-laboratory quality control and is supplied with acceptable value intervals.\u003c\/p\u003e\n\u003cp\u003eTraceability is only ensured when the reagents and measurement procedures recommended by BioSystems are used.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005816\/12822\/en\" rel=\"noopener\" target=\"_blank\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897147458,"sku":"12822","price":87.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Wine_Control_Red_Kit.jpg?v=1751402361"},{"product_id":"potassium-reagent-kit","title":"Potassium","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eEnzymatic method for potassium determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 80 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 340 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 1500 mg\/l wine \/ 4000 mg\/l juice\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 8 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e5 liquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe amount of potassium in grape must varies between 600 and more than 2500 mg\/L in certain varieties of red wine. During véraison, soil potassium moves toward the fruit where it forms soluble potassium bitartrate. Alcohol and low temperatures can reduce its solubility, leading to precipitation.\u003c\/p\u003e\n\u003cp\u003ePotassium in the sample consumes NADH (by the following reaction), which can be measured by spectrophotometry.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005926\/12823\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897180226,"sku":"12823","price":334.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Potassium_Kit.jpg?v=1751402171"},{"product_id":"calcium-reagent-kit","title":"Calcium","description":"\u003cp\u003e\u003cstrong\u003eColorimetric analysis for calcium determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 80 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 635 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 180 ml\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 2.0 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable two-reagent liquid until the expiration date\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCalcium is present in wine at concentrations of 6 to 165 mg\/L. Instability due to calcium tartrate appears at 4 to 7 months of fermentation.\u003c\/p\u003e\n\u003cp\u003eCalcium in the sample reacts with 2,7-[bis(2-arsonophe- nylazo)]-1,8-dihydroxynaphthalene-3,6-disulfonic acid (Ar- senazo III). The color increase is directly proportional to the calcium concentration of the sample.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005089\/12824\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897212994,"sku":"12824","price":68.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Calcium.jpg?v=1751496459"},{"product_id":"citric-acid-reagent-kit","title":"Citric Acid, reagent kit for wine and beer","description":"\u003cp\u003e\u003cstrong\u003eEnzymatic method for citric acid determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 50 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 340 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 400 mg\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 11 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable working reagent for 1 month\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCitric acid is an organic acid naturally present in wine that con- tributes to total wine acidity. Its content is higher in white wine, as the content in red wine drops during malolactic fermentation yielding volatile acids. The permissible legal limit is 1 g\/L, and its concentration must be controlled by wine exporters.\u003c\/p\u003e\n\u003cp\u003eCitrate in the sample yields oxaloacetate due to the action of the enzyme known as lyase citrate. All oxaloacetate from citrate in the sample is converted into L-malic acid by the enzyme L-malate dehydrogenase. The disappearance of NADH may be read by spectrophotometry.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005893\/12825\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897245762,"sku":"12825","price":126.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/KIT-CITRIC-ACID.jpg?v=1751389245"},{"product_id":"pyruvic-acid","title":"Pyruvic Acid","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eEnzymatic method for pyruvic acid determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 100 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 340 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 400 mg\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 6 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003eStable working reagent for 2 months\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePyruvic acid is an organic acid naturally present in wine and one of the acids that most influences its body and mouthfeel. Pyruvic acid is a result of the fermentation process and contributes to the organoleptic properties of wine, but must be controlled because selective sulfite-binding shortens the life of the wine.\u003c\/p\u003e\n\u003cp\u003ePyruvate in the sample yields oxalacetate due to the action of the enzyme known as D-lactate dehydrogenase. This reaction consumes NADH that is oxidized to NAD+ and the disappearance of the latter can be measured by spectrophotometry.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0003509\/12826\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897278530,"sku":"12826","price":165.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Pyruvic_Acid_Kit.jpg?v=1751557105"},{"product_id":"control-sulfite","title":"Sulfite Control","description":"\u003cp\u003eSulfite (I and II) Control is a synthetic liquid material that contains stabilized sulfite at adequate concentrations for quality control in laboratories. It does not contain preservatives that could interfere with the measurements.\u003c\/p\u003e\n\u003cp\u003eThe concentration values assigned to each level are shown in the attached tables. The values are traceable to the unit of mass. Traceability is ensured only by using the measurement reagents and procedures recommended by BioSystems. The acceptable ranges suggested have been prepared based on prior experience in interlaboratory variability and are provided only as a guideline, as each laboratory should establish its own precision parameters.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0004453\/12827\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv title=\"Page 23\" class=\"page\"\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 28.7992%;\"\u003e \u003ccol style=\"width: 20.7282%;\"\u003e \u003ccol style=\"width: 15.69%;\"\u003e \u003ccol style=\"width: 18.1474%;\"\u003e \u003ccol style=\"width: 14.9338%;\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eComponent \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eLevel \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eValue \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eLimits \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eUnits \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"1\" rowspan=\"2\"\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eSulfite\u003cbr\u003e(free \u0026amp; total) \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eI \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e40 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e36-44 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003emg\/L \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eII \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e80 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e72-88 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003emg\/L \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897344066,"sku":"12827","price":79.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Sulfite_Control_Kit.jpg?v=1751556659"},{"product_id":"ascorbic-acid","title":"Ascorbic acid, reagent kit for wine","description":"\u003cp\u003e\u003cstrong\u003eEnzymatic method for ascorbic acid determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 90 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 560 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 150mg\/L\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 1.4 mg\/L\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable working reagent for 10 days\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eCalibrator included in the kit. Once reconstituted, stable for 20 days\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAscorbic acid is a compound found in ripe grapes at very low levels compared with other acids (30-60 mg\/L). It disappears rapidly when grapes are crushed, leading to early oxidation of must. Due to its reducing properties, ascorbic acid is used as an antioxidant.\u003c\/p\u003e\n\u003cp\u003eAscorbic acid in the sample lowers MTT in the presence of PMS electron carrier, forming dehydroascorbic acid and MTT-formazan that can be assayed by spectrophotometry. To eliminate interferences ascorbic acid is eliminated from the sample by oxidation to dehydroascorbic acid (ascorbate oxidase [AO]).\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005445\/12828\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897376834,"sku":"12828","price":282.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Ascorbic_Acid.jpg?v=1751405458"},{"product_id":"histamine","title":"Histamine, reagent kit for wine","description":"\u003cp\u003e\u003cstrong\u003eELISA method\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 100 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 420 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 160 mg\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 2.1 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"page\" title=\"Page 24\"\u003e\n\u003cdiv class=\"section\"\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eHigh sensitivity\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLiquid reagent, stable until the expiration date\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEasy sample preparation\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"page\" title=\"Page 24\"\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eHistamine is a biogenic amine present in certain food with high concentrations of protein or foods exposed to fermentation processes. Histamine is created by certain microorganisms that affect the amino acid histidine. Histamine intake by sensitive individuals produces undesirable effects, such as headaches or skin reactions; hence, it should be controlled. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eHigh-sensitivity ELISA of histamine is a competitive enzyme-linked immunoabsorbent assays for the quantitative analysis of histamine in wine, fish, cheese and meat. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eHistamine in the sample is quantitatively derivatized to N-acylhistamine by using an acylating reagent. The microplate wells are coated with histamine. In a first incubation, acylated histamine in the sample or reference standard competes with fixed histamine to bind to anti-histamine antibodies.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0004932\/12829\/en\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eView Product Documentation\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897409602,"sku":"12829","price":559.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Histamines_box.jpg?v=1751319169"},{"product_id":"anthocyanins","title":"Anthocyanins, reagent kit for wine","description":"\u003cp\u003e\u003cstrong\u003eEnzymatic analysis for acetaldehyde determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 100 ml\u003c\/li\u003e\n\u003cli\u003eMethod: End-point at 520 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 1386 ml\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 15 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAnthocyanins are the tinted pigments in grapes, with the word coming from the Greek root “antos” (flower) and “kyanos” (blue). These pigments are found in both the skin and the pulp.\u003c\/p\u003e\n\u003cp\u003eAnthocyanins are water-soluble pigments that provide the characteristic red color of wine. At 520 nm and under cer- tain conditions, the color is proportional to anthocyanin con- centrations. The proposed method determines ionized and ionizable anthocyanins present in the sample. Anthocyanins polymerized with tannins or other compounds cannot be assayed with this method.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0000956\/12831\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897475138,"sku":"12831","price":79.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Anthocyanins_kit.jpg?v=1751496191"},{"product_id":"catechin-reagent-kit","title":"Catechins, reagent kit for wine","description":"\u003cp\u003e\u003cstrong\u003eColorimetric analysis for the assay of catechins\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 100 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 620 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 500 mg\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 12 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003eStable working reagent for 4 months\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCatechins reduce and prevent anthocyanin oxidation, keeping them from being precipitated. They are also responsible for the bitterness, astringency, yellow hue, structure and stabil- ity of the wine. When catechins are polymerized, they form procyanidins that gradually form complexes with proteins, peptides and polysaccharides.\u003c\/p\u003e\n\u003cp\u003eCatechins in the sample react with the chromogen 4-(dime- thylamino)-cinnalmaldehyde in the presence of ethanol and an acidic medium, forming a colored complex that can be assayed by spectrophotometry.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0004988\/12834\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897540674,"sku":"12834","price":174.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Catechins_kit.jpg?v=1751496868"},{"product_id":"ion-standard","title":"Ion Multical","description":"\u003cp\u003e\u003cstrong\u003eMultiparameter calibrator\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e5 levels with 10 mL\u003c\/li\u003e\n\u003cli\u003eShelf life: 36 months\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIONS MULTICAL: Multiparameter calibrator with five synthetic matrix liquid levels that contain various metals at adequate concentrations to calibrate the measurement procedures.\u003c\/p\u003e\n\u003cp\u003eThe concentration values assigned to each component and their traceability is ensured by using the reagents and measurement procedures recommended by BioSystems.\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"https:\/\/einfo.bio\/0004041\/12841\/en\" target=\"_blank\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv class=\"page\" title=\"Page 22\"\u003e\n\u003ctable style=\"width: 100.087%;\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 22.6739%;\"\u003e \u003ccol style=\"width: 16.5555%;\"\u003e \u003ccol style=\"width: 11.0333%;\"\u003e \u003ccol style=\"width: 11.2084%;\"\u003e \u003ccol style=\"width: 10.5079%;\"\u003e \u003ccol style=\"width: 12.4343%;\"\u003e \u003ccol style=\"width: 13.31%;\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eParameter \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eU \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e1 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e2 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e3 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e4 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e5 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eCalcium 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class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eIron \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003emg\/L \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e3,4 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e6,8 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e13,5 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e20,3 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e27,0 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003ePotassium \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003emg\/L \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e188 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e375 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e750 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e1125 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e1500 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eMagnesium \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003emg\/L \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e4,5 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e9,0 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e18,0 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e27,0 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003e36,0 \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897573442,"sku":"12841","price":179.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Ions_Multical.jpg?v=1751399878"},{"product_id":"total-acidity-reagent-kit","title":"Total Acidity","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eColorimetric analysis for the assay of total acidity\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 100 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 620 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 12 g\/l\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTotal acidity should be determined in must to ensure good fermentation, as well as in wine after fermentation because it is a key factor for the storage and stability of wine over time. Low acidity means that microbial alterations and wine with defects and of poorer quality is more likely. Low acidity can cause microbial instability that results in wine defects and overall decrease in quality. Wine should have an adequate total acidity value consistent with the other components to achieve good balance. This value can be between 3 and 7 g\/L.\u003c\/p\u003e\n\u003cp\u003eTotal acidity is the sum of assayable acids in wine or must, such as malic acid, tartaric acid, lactic acid, etc., except for carbonic acid and sulfurous acid. This reagent determines the total acidity, expressed as g\/L of tartaric acid.\u003c\/p\u003e\n\u003cp\u003eAcids in the sample modify the pH in the reaction mixture that, in the presence of the bromothymol blue (BTB) indicator, can be measured spectrophotometrically.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005035\/12846\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897638978,"sku":"12846","price":129.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Total_Acidity_Kit.jpg?v=1751399668"},{"product_id":"ph-kit-3-0-4-0","title":"pH Kit, (3.0 - 4.0)","description":"\u003cp\u003e\u003cstrong\u003eColorimetric method for the determination of pH\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 100 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 600 nm\u003c\/li\u003e\n\u003cli\u003eRange: 3.0 to 4.40 \u003c\/li\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003eShelf life: 36 months\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLiquid reagent stable until expiry date\u003c\/li\u003e\n\u003cli\u003eDedicated reagents ready for use\u003c\/li\u003e\n\u003cli\u003eLiquid calibration standards included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn musts and wines the pH varies depending on the ripeness of the grapes, the concentration of organic acids at the time of harvest, the variety of the grape, the presence and metabolism of micro-organisms and the fermentation temperature etc. The appearance of tartrate precipitates during the wine-making process will alter the final pH of the wine.\u003c\/p\u003e\n\u003cp\u003eThe hydrogen ions in the sample alter the pH of the sample\/ buffer mix and can be measured spectrophotometrically with the bromophenol blue indicator.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005038\/12876\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897671746,"sku":"12876","price":129.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/pH.jpg?v=1751392700"},{"product_id":"ochratoxin-a-competitive-elisa","title":"Ochratoxin-A \/ Competitive ELISA","description":"\u003cul\u003e\n\u003cli\u003ePresentation: 96 wells\u003c\/li\u003e\n\u003cli\u003eMethod: Competitive ELISA, reading at 450 nm\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 0,3 ppb\u003c\/li\u003e\n\u003cli\u003eSTD Concentration: 0 - 0,0625 - 0,125 - 0,25 - 0,5 - 1 pp\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897704514,"sku":"14108","price":699.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Ochratoxin.jpg?v=1737655241"},{"product_id":"casein-allergen-96-wells","title":"Casein, ELISA, 96 wells","description":"\u003cul\u003e\n\u003cli\u003ePresentation: 96 wells\u003c\/li\u003e\n\u003cli\u003eMethod: Sandwich ELISA, reading at 450 nm\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 0,04 ppm\u003c\/li\u003e\n\u003cli\u003eSTD Concentration: 0 - 0,2 - 0,6 - 2 - 6 ppm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFast, standard method\u003c\/li\u003e\n\u003cli\u003eHigh sensitivity\u003c\/li\u003e\n\u003cli\u003eLiquid reagent, stable until the expiration date • Easy sample preparation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCasein is an allergenic protein present in cow’s milk and dairy products made from cow’s milk. The presence of traces of these proteins must be labeled due to the risk it poses to the health of people with allergies, as set forth in the legislation. In addition to foods that naturally contain casein, there may be traces of these proteins in processed foods due to cross-contamination or the use of additives. Caseins are used as clarifier or fining agent in the winemaking process.\u003c\/p\u003e\n\u003cp\u003eCasein reagent is a sandwich enzyme-linked immunosorbent assay (ELISA) for the quantitative analysis of casein traces in samples of wine, juice, cookies, meat products, chocolate and other food products.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0004692\/14113\/en\" rel=\"noopener\" target=\"_blank\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897737282,"sku":"14113","price":1226.0,"currency_code":"USD","in_stock":true}]},{"product_id":"lysozyme-allergen-96-wells","title":"Lysozyme, allergen, 96 wells","description":"\u003cp\u003e\u003cstrong\u003eELISA method\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePresentation: 96 wells\u003c\/li\u003e\n\u003cli\u003eMethod: Sandwich ELISA\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 2 ppb\u003c\/li\u003e\n\u003cli\u003eSTD Concentration: 0 - 25 - 100 - 250 - 500 ppb\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFast, standard method\u003c\/li\u003e\n\u003cli\u003eHigh sensitivity\u003c\/li\u003e\n\u003cli\u003eLiquid reagent, stable until the expiration date\u003c\/li\u003e\n\u003cli\u003eEasy sample preparation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLysozyme is an allergenic protein contained in eggs and egg products. As set forth by law, the presence of traces of this protein should be labeled due to the risk posed to the health of allergic individuals. In addition to foods that naturally contain lysozyme, there may be traces of this protein in processed foods due to cross-contamination or the use of additives. Lysozyme is used as a preservative in the winemaking process.\u003c\/p\u003e\n\u003cp\u003eLysozyme reagent is a sandwich enzyme-linked immunosorbent assay (ELISA) for the quantitative analysis of casein traces in wine and cheese samples.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0004713\/14122\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897770050,"sku":"14122","price":1226.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/LYSOZYME.jpg?v=1705539045"},{"product_id":"ovoalbumin-allergen-96-wells","title":"Ovalbumin, ELISA \/ 96 wells","description":"\u003cp\u003e\u003cstrong\u003eELISA method\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePresentation: 96 wells\u003c\/li\u003e\n\u003cli\u003eMethod: Sandwich ELISA\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 4 ppb\u003c\/li\u003e\n\u003cli\u003eSTD Concentration: 0 - 25 - 100 - 250 - 500 ppb\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFast, standard method\u003c\/li\u003e\n\u003cli\u003eHigh sensitivity\u003c\/li\u003e\n\u003cli\u003eLiquid reagent, stable until the expiration date\u003c\/li\u003e\n\u003cli\u003eEasy sample preparation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOvalbumin is an allergenic protein contained in eggs and egg products. As set forth by law, the presence of traces of this protein should be labeled due to the risk posed to the health of allergic individuals. In addition to foods that naturally contain ovalbumin, there may be traces of this protein in processed foods due to cross-contamination or the use of additives. Ovalbumin is used as a clarifier finding agent in the winemaking process.\u003c\/p\u003e\n\u003cp\u003eOvalbumin reagent is a sandwich enzyme-linked immunosorbent assay (ELISA) for the quantitative analysis of casein traces in wine and food samples.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0004714\/14125\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897802818,"sku":"14125","price":1226.0,"currency_code":"USD","in_stock":true}]},{"product_id":"spike-kit-casein","title":"Casein Spike Solution Kit","description":"\u003cp\u003e3 mL, 50 ppm Casein\u003c\/p\u003e\n\u003cp\u003eThe Casein Spike Solution is intended for the execution of spiking experiments in combination with the Casein ELISA kit.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005790\/14151\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897835586,"sku":"14151","price":275.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/CaseinSpikeSolutionBoxandbottle.png?v=1705539680"},{"product_id":"ochratoxin-a-wine","title":"Ochratoxin-A \/ ELISA \/ Rapid \/  Wine","description":"\u003cul\u003e\n\u003cli\u003eELISA \/ Rapid test\u003c\/li\u003e\n\u003cli\u003e10 tests\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897868354,"sku":"14203","price":571.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Ochratoxin-ARapidtestboxandbottles.png?v=1706034352"},{"product_id":"acetic-acid-reagent-kit-maxi","title":"Acetic Acid, MAXI size, Y200\/Y400","description":"\u003cul\u003e\n\u003cli\u003eKit volume: 750 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 340 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 200 ml\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 0.1 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897933890,"sku":"21810","price":2283.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/products\/21810_AceticAcid21810.jpg?v=1588268363"},{"product_id":"glucose-fructose-reagent-kit-ba400","title":"D-Glucose \/ D-Fructose, Y200 \/ Y400 and Spica format, reagent kit for wine, cider and kombucha","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eEnzymatic method for D-glucose \/ D-fructose determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 216\u003cspan\u003e \u003c\/span\u003eml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 340 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 8 g\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: D-Glucose: 0.03 g\/l. D-Glucose \/ D-Fructose: 0.02 g\/l\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eWorking reagent stable until the expiration date\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis test indicates the best moment for grape harvesting and allows alcoholic fermentation to be monitored. It is widely used to determine the dryness of the wine before bottling.\u003c\/p\u003e\n\u003cp\u003eD-fructose and D-glucose in the sample generate NADH (by the following reaction), which can be measured by spectrophotometry. The configuration of these reagents allows D-glucose\/D-fructose (total sugars) to be determined if the enzyme PGI is added or D-glucose to be determined if it is not.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0004735\/23800\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897966658,"sku":"23800","price":543.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/products\/23800_1c4b8782-b1d8-47b5-bb27-bbdac55dd892.jpg?v=1588263031"},{"product_id":"l-malic-acid-reagent-kit-ba400","title":"L-Malic Acid, Y200 \/ Y400 and Spica format","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eEnzymatic method for L-malic acid determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 225 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 340 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 4 g\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 16 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eStable working reagent for 4 months\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eL-malic acid is responsible for the sharply acidic, green apple flavor in wine. It’s fermentation yields L-lactic acid and causes perceived acidity to soften.\u003c\/p\u003e\n\u003cp\u003eL-malic acid in the sample yields NADH (by the following reaction), which can be measured by spectrophotometry. The equilibrium of this reaction moves toward L-malic acid formation. The enzyme glutamate-oxaloacetate transaminase (GOT) causes the equilibrium to shift by eliminating oxaloacetate, which is converted into L-aspartate in the presence of L-glutamate.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0004700\/23803\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31139897999426,"sku":"23803","price":480.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/products\/23803_L-MalicAcid23803.jpg?v=1588264192"},{"product_id":"acetic-acid-reagent-kit-with-pvp-ba400","title":"Acetic Acid,  Y200 \/ Y400 format","description":"\u003cul\u003e\n\u003cli\u003eKit volume: 225 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 340 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 200 ml\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 0.1 mg\/l (ppm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #2b00ff;\"\u003eAcetic acid is produced during both alcoholic and malolactic fermentations and helps enhance flavors and aromas. When the wine is aerated or remains in contact with air, acetic acid bacteria can multiply, leading to a problem known as “acetic\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: #2b00ff;\"\u003espoilage”. The characteristic aroma of this spoilage is due to ethyl acetate.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31703092592706,"sku":"23810","price":686.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/products\/23810_AceticAcid23810.jpg?v=1588113013"},{"product_id":"l-malic-acid-maxi","title":"L-Malic Acid, MAXI kit","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eEnzymatic method for L-malic acid determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 750 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 340 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 400 mg\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 11 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eStable working reagent for 4 months\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eL-malic acid is responsible for the sharply acidic, green apple flavor in wine. It’s fermentation yields L-lactic acid and causes perceived acidity to soften.\u003c\/p\u003e\n\u003cp\u003eL-malic acid in the sample yields NADH (by the following reaction), which can be measured by spectrophotometry. The equilibrium of this reaction moves toward L-malic acid formation. The enzyme glutamate-oxaloacetate transaminase (GOT) causes the equilibrium to shift by eliminating oxaloacetate, which is converted into L-aspartate in the presence of L-glutamate.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0004475\/21803\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31750973882434,"sku":"21803","price":1593.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/products\/21803_L-MalicAcid21803.jpg?v=1588112923"},{"product_id":"d-glucose-d-fructose-reagent-kit-maxi","title":"D-Glucose \/ D-Fructose, MAXI size","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eEnzymatic method for D-glucose \/ D-fructose determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 720 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 340 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 8 g\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: D-Glucose: 0.03 g\/l. D-Glucose \/ D-Fructose: 0.02 g\/l\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eWorking reagent stable until the expiration date\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis test indicates the best moment for grape harvesting and allows alcoholic fermentation to be monitored. It is widely used to determine the dryness of the wine before bottling.\u003c\/p\u003e\n\u003cp\u003eD-fructose and D-glucose in the sample generate NADH (by the following reaction), which can be measured by spectrophotometry. The configuration of these reagents allows D-glucose\/D-fructose (total sugars) to be determined if the enzyme PGI is added or D-glucose to be determined if it is not.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0004774\/21800\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":31474618630210,"sku":"21800","price":1808.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/products\/21800_D-GlucosaD-Fructosa21800.jpg?v=1588112804"},{"product_id":"acetic-acid-liquid-bsa-100-ml","title":"Acetic Acid (Liquid) Y15\/Y25","description":"\u003cp\u003e\u003cstrong\u003eNew enzymatic method for acetic acid determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 100 ml, all liquid format\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 340 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 1.3 g\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 0.03 g\/l\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable working reagent for 1 month\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAcetic acid is produced during both alcoholic and malolactic fermentations and helps enhance flavors and aromas. When the wine is aerated or remains in contact with air, acetic acid bacteria can multiply, leading to a problem known as “acetic spoilage”. The characteristic aroma of this spoilage is due to ethyl acetate.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005088\/12930\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":32599237034050,"sku":"12930","price":328.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Acetic_Acid_Kit.jpg?v=1751392378"},{"product_id":"acetic-acid-liquid","title":"Acetic Acid (Liquid), Maxi Y200\/Y400","description":"\u003cp\u003e\u003cstrong\u003eNew enzymatic method for acetic acid determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 750 ml, all liquid format\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 340 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 1.3 g\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 0.03 g\/l\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable working reagent for 1 month\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAcetic acid is produced during both alcoholic and malolactic fermentations and helps enhance flavors and aromas. When the wine is aerated or remains in contact with air, acetic acid bacteria can multiply, leading to a problem known as “acetic spoilage”. The characteristic aroma of this spoilage is due to ethyl acetate.\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"https:\/\/einfo.bio\/0004424\/21930\/en\" target=\"_blank\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":39506351194178,"sku":"21930","price":2462.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/products\/12810AABox_5953c656-cf6f-4478-b661-5f6c08f7361d.jpg?v=1631637246"},{"product_id":"acetic-acid-liquid-y200-y400-format","title":"Acetic Acid (Liquid) Y200 \/ Y400 and Spica format","description":"\u003cp\u003e\u003cstrong\u003eNew enzymatic method for acetic acid determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 225 ml, all liquid format\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 340 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 1.3 g\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 0.03 g\/l\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable working reagent for 1 month\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAcetic acid is produced during both alcoholic and malolactic fermentations and helps enhance flavors and aromas. When the wine is aerated or remains in contact with air, acetic acid bacteria can multiply, leading to a problem known as “acetic spoilage”. The characteristic aroma of this spoilage is due to ethyl acetate.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0004425\/23930\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"BioSystems","offers":[{"title":"Default Title","offer_id":39506356404290,"sku":"23930","price":739.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/products\/12810AABox_6e20475b-74a5-4ac8-b36f-fe84bcc89707.jpg?v=1737152952"},{"product_id":"sorbic-acid-50ml-for-y15-y25-2","title":"Sorbic Acid, reagent kit for Y15\/Y25","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eColorimetric analysis for sorbic acid determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 150 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Kynetic monoreagent, reading at 520 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 300 mg\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 2.19 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSorbic Acid is a natural organic compound used as a food preservative in its mineral salt form (Potassium sorbat). The maximum limit permitted by OIV in wine for sorbic acid is 200 mg\/l. Sorbic acid inhibits with SO2 yeast populations in pre-bottled wine and it is used to avoid undesired fermentations in wine bottles, especially in off-dry and sweet wines.\u003c\/p\u003e\n\u003cp\u003eSorbic acid is oxidized to obtain malondialdehyde (MD) that reacts with thiobarbituric acid (TBA) generating a compound that can be measured spectrophotometrically.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005677\/12880\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"Admeo","offers":[{"title":"Default Title","offer_id":39705982828610,"sku":"12880","price":262.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/Sorbic_Acid.jpg?v=1751556852"},{"product_id":"l-lactic-acid-y200-y400-and-spica-format-reagent-kit-for-wine-kombucha-and-juice","title":"L-Lactic Acid, Y200 \/ Y400 and Spica format, reagent kit for wine, kombucha and cider","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eEnzymatic method for L-lactic acid determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 150 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 340 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 3000 mg\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 0.02 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eL-lactic acid is the product of the metabolism of malic acid during the malolactic fermentation. L-lactic acid is perceived as less acidic and softer on the palate compared to malic acid.\u003c\/p\u003e\n\u003cp\u003eL-lactic acid in the sample yields NADH (by the following reaction), which can be measured by spectrophotometry.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005399\/21802\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"Admeo","offers":[{"title":"Default Title","offer_id":40309465022530,"sku":"21802","price":519.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/L-Lactic_Acid.jpg?v=1751389688"},{"product_id":"total-sulfite-y200-y400-and-spica-format-reagent-kit-for-wine-kombucha-and-juice","title":"Total Sulfite, Y200 \/ Y400 and Spica format, reagent kit for wine, kombucha and cider","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eColorimetric analysis for total sulfite determination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKit volume: 225 ml\u003c\/li\u003e\n\u003cli\u003eMethod: Two-reagent differential at 405 nm\u003c\/li\u003e\n\u003cli\u003eLimit of linearity: 400 mg\/l\u003c\/li\u003e\n\u003cli\u003eLimit of detection: 1 mg\/l (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable liquid reagent until the expiration date\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eReady-to-use dedicated reagent\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLiquid calibrator included in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSulfite is the main preservative of wines and musts, due to its antiseptic properties on yeasts and bacteria; it also has antioxidant properties. According to Council Regulation (EC) No 1493\/1999 and Council Regulation (EC) No 1622\/2000, the sulfur dioxide content of wine is limited, as it is considered to be a slightly toxic substance from the point of view of its effects on human physiology.\u003c\/p\u003e\n\u003cp\u003eTotal sulfites in the sample react with 5-5’-dithio-2-nitroben- zoic (DTNB) acid in basic medium. Cleavage of the disulfide bond (R-S-S-R) of DTNB by a sulfite molecule yields the 5-mercaptan- 2-nitrobenzoate molecule, which absorbs at 405 nm. The color increase of the sample is directly proportional to the total sulfite concentration of the sample.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/einfo.bio\/0005640\/21806\/en\" target=\"_blank\" rel=\"noopener\"\u003eView Product Documentation\u003c\/a\u003e\u003c\/p\u003e","brand":"admeo","offers":[{"title":"Default Title","offer_id":40309474852930,"sku":"21806","price":251.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0106\/8302\/3426\/files\/TotalSulfiteBoxandReagents.jpg?v=1739390164"}],"url":"https:\/\/www.admeo.us\/collections\/reagents-1.oembed","provider":"Admeo","version":"1.0","type":"link"}