API GH and KH Hardness Test Kit for Freshwater
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
Easy to use just takes time
Very easy to use but can be messy shaking after every drop. But easy to read