Many wine cellars rely on two manual and time consuming wet chemistry methods to determine free and total sulfites in their product. For speed, they turn to the Ripper Method. For accuracy, they turn to the Aspiration Method (also known as Modified Monier-Williams or Aeration Oxidation/AO). Both require dedicated glassware, tools, and solutions. Additionally, both are partially subjective as a color change, indicating an end-point, must be determined visually by the operator.

For wineries already automating enzymatic testing of common analytes (including glucose and fructose, malic acid, acetic acid, and more), there is an easier option! Both the Free and Total Sulfite reagent kits from Admeo provide data that tracks well with data from the Aeration/Oxidation method¹ when used on automated spectrophotometric analyzers like the Y15. This allows both accuracy and speed from just one method, with very little user input - translating to time and money saved in your cellar.

In the past, free sulfite determination via spectrophotometry was known to work well with white and light red wine samples but showed interference from darker red wine matrices. The R&D team of Admeo’s partner Biosystems took on this challenge and, with the help of winery clients worldwide, developed a reformulation with a new method and oxidizing agent to better combat polyphenolic interference. This kit launched in the U.S. in March 2020 and has been successfully implemented all over the country since then.

Check it out here! https://www.youtube.com/watch?v=O2U1UjTA7IE&feature=youtu.be 

For more information, please send us a message at info@admeo.us. We are happy to talk!

Work smarter or work harder.

1. Sergio Munoz. BioSystems Food Quality Free Sulfite Performance Report.