Low Range Water Hardness Test StripsKit of 6 bottles x 50 tests Serim GUARDIAN WATER HARDNESS Test Strips provide a convenient means for indicating the level of hardness in water at the post softener stage of the water treatment process in dialysis clinics, hospitals, food production, etc. Hardness is described as the total concentration of calcium and magnesium, expressed as ppm or grains gallon of calcium carbonate (CaCO3). Softening is a pre treatment process for water which will
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