Plastic Hydrometer Test Jar
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Checking the Specific Gravity of unfermented and fermented beverages with a Test Jar is quick and easy.
To test for gravity, use a Fermtech Wine Thief to remove a liquid sample from a fermentation vessel and fill the test jar with the sample.
Place a hydrometer in the test jar and note the location where the liquid crosses the stem of the hydrometer.
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