The JBL KH Test set is an easy to use quick-test for determining the carbonate hardness or the antacid capacity of saltwater and fresh water. Recommended level in freshwater: 4-8Degree GCH(German carbonate hardness). 1 drop = 1Degree GCH. Colour change from blue to yellow. The number of used drops = level of carbonate hardness. For this reason test does not require a colour scale. The most important test in aquatics since KH stabilizes the pH value.
Dimensions: 2.75" x 3.75" x 1.5"
Weight: 50 Grams
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