The
Free SO2 Kit includes 2 High Range Tests (red caps) and 8 Low Range
Tests (green caps), 10 samplers, and an insert with complete how-to-run
instructions. The insert also includes a Summary Interpretation
explaining how to use the test results. The label with the color chart
is on the front of the kit.</td>
<td width="2%"><div align="right">$31.99</td>
<td width="2%">
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Approximately 50 ppm of free S02 for the first time addition and each additional dose will slowly decrease as it will bind at lesser rates for each time you add it.