Water hardness test box

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).

Test Range:

A semi-quantitative estimation of the total hardness of water between 0 and 120 ppm can be made by comparing the reacted indicator pad color to the color chart on the bottle label.

Color blocks represent hardness levels of 0, 10, 25, 50 and 120 ppm or their equivalent values expressed in grains per gallon.

Test Time:

Semi-quantitative – 10 seconds