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| The Accuvin Free SO2 (Free Sulfur Dioxide) kit measures the level of free SO2. The sulfur dioxide present in must and wine is not all useful as a preservative. Some is bound to other chemical components, reducing its effectiveness as a preservative by 30 - 70%. Also, the degree of binding can change over time, affecting the ability of an adequate dose to continue providing its preservative properties. The effectiveness of sulfur dioxide as a preservative is also pH-dependent, with low pH wines requiring lower levels, and high pH wines requiring significantly greater concentrations to achieve the same effectiveness as in a typical wine with a pH of 3.3 - 3.4. The Accuvin Free SO2 Kit is divided into a Low Range (0 - 40 ppm) and a High Range (40 - 130 ppm). |
The Free SO2 Kit includes High Range Tests (red caps) and Low Range Tests (green caps), rehydration tubes (black caps), samplers, and complete illustrated how-to-run instructions. The insert includes a Summary Interpretation explaining how to use the test results. A monitoring chart is included. The label with the color chart is on the front of the kit.
(chart included with kit)
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