Colorimetric analysis for sorbic acid determination
- Kit volume: 150 ml
- Method: Kynetic monoreagent, reading at 520 nm
- Limit of linearity: 300 mg/l
- Limit of detection: 2.19 mg/l (ppm)
Advantages
- Stable liquid reagent until the expiration date
- Liquid calibrator included in the kit
Sorbic 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.
Sorbic acid is oxidized to obtain malondialdehyde (MD) that reacts with thiobarbituric acid (TBA) generating a compound that can be measured spectrophotometrically.
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SPICA measures everything we need to measure, and then some!We love how easy SPICA is to use. It is such a gift how well it handles free sulfur dioxide and total sulfur dioxide, especially since those are a large percentage of the tests we run. It has been a complete game changer considering how many samples we run each year.We appreciate that the people at Admeo answer the phone and help us right away. It means a lot to us how amazing and considerate everyone is. Admeo shows up for the wine industry so well, we never feel like a side hustle like we have with other companies. We feel how much Admeo and BioSystems genuinely care about SPICA and support us, which is why we recommend other wineries get a SPICA too!
Molly Erin Cappiello, Lab Technician andResearch Aide in the Craft Beverage Analytical Lab at Cornell University
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Our analyses with SPICA and Y400 is precise, really fast, and one of the most important things that made us choose Admeo and BioSystems is the team behind it. Your customer support is fantastic!
Vivienne Ye, Senior Enologist at Charles Krug
"Working with Admeo has been a dream, the company is so supportive."
Customer support is awesome, two thumbs way up!Working with Admeo has been a dream, the company is so supportive. They stand behind their products, and support answers our questions quickly.It is easy to get SPICA going at the beginning of the day, it is simple and intuitive to use and very efficient. Getting supplies and materials is smooth. We place our order, the items are shipped right away, and we get them quickly. We love that the kits are specifically designed to work with SPICA.We needed a reliable enzymatic analyzer that would give our clients accurate data.We know we can count on SPICA!
Hannah Guchone, Lab Technician in the Craft Beverage Analytical Lab at Cornell University
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I would highly recommend Admeo’s products to others in the industry. They are user friendly and efficient, making the time in the lab more valuable. ONX wanted to outfit our lab to its full potential, especially being a Custom Crush program. The FLASH2 and Y15 give us the opportunity to create a new revenue source that wasn’t possible before. In 2025, ONX’s Lab program increased nearly 60% in revenue. With the Y15 and Flash2 both being automated systems, I can load the machines and work on something else while they are running, making my time in the lab more efficient. We test our wine lots every month to make sure they are stable and where they need to be chemically speaking. By integrating Admeo’s products into our lab, we are able to cut down on costs and get results faster. Admeo’s support is great! I feel like I can always reach out and receive a prompt and valuable solution to any question I might have.
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The Y15 is definitely the most important piece of equipment we have in our lab, it keeps us rolling during harvest and throughout the year. We have used the Y15 for about 6 years. Pre-fermentation, we rely on it to check PAN and ammonia to calculate YAN. The Y15 makes fermentation tracking simple, consistent, and accurate. We know exactly where we’re at, and that lets us make decisions confidently.We use it for monthly acetic acid and free sulfite checks. We make a late harvest fortified wine and being able to dilute and measure sugar up to 150 g/L has been great. It's a huge help staying on top of RS. Each morning, we collect our samples and once loaded in the Y15, it runs independently. We set it and forget it and go back out to the cellar so this helps us multitask. It is straightforward, after a couple hours of training, I trust a seasonal lab tech to run it confidently. Admeo has great service. They’re always there to help us and are easy to work with.
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