API GH and KH Hardness Test Kit for Freshwater
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General Hardness is the measuring of calcium and magnesium. Carbonate Hardness is also known as alkalinity and helps to stabilize pH. This kit contains: 2 dropper bottles, instructions, color chart and non-staining glass test tube with snap tight cap.
Add reagent drops to water sample and compare to included color chart.
Ratings & Reviews
7/25/2013 12:00:00 am
Easy to use just takes time
Very easy to use but can be messy shaking after every drop. But easy to read