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Sulfite in Wine Titrets Kit

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Sulfites have been used for centuries to sanitize and preserve foods. They are used worldwide in the wine industry as antioxidant and antimicrobial agents. However, sulfites have been identified as causative agents in certain allergic reactions suffered by asthmatics. As a result, the FDA and the Bureau of Alcohol,Tobacco, and Firearms have mandated that sulfites in foods and beverages, at levels of 10 ppm or higher, be identified on the label.

The Ripper Method (Sulfite in Wine)

References: ASTM D 1339-84, Sulfite Ion in Water, Test Method C. APHA Standard Methods, 23rd ed, Method 4500-SO3 2- B - 2000. USEPA Methods for Chemical Analysis of Water and Wastes, Method 377.1 (1983).

CHEMetrics’ sulfite test kit is based on the Ripper method, which the wine industry has used for years as a standard for rapid sulfite analysis. Sulfite is titrated with an iodide-iodate solution, using a starch end point indicator. Phosphoric acid is used to adjust the pH of the sample. Results are quantified using direct-reading titration cells. The test determines free sulfite as ppm (mg/L) SO2.

Range: 10-100 ppm as SO2

MDL: 10 ppm

Method: Ripper (Sulfite in Wine)

Increments: 10, 11, 12, 13, 14, 15, 16, 18, 20, 25, 30, 35, 40, 50, 70, 100 ppm

Kit comes in a cardboard box and contains everything needed to perform 10 tests: ten ampoules, ten valve assemblies, and instructions.

Results for this test kit are acceptable for white wines (although they can have an error up to 10 ppm). This kit is not recommended for use with red wines or white wines containing ascorbic acid or tannin. These wines often give false high test results.

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