Water hardness indicator strips 0-21 °d, 100 strips/pack

Semi-quantitative indicator strips for: Nitrite, Peroxide, Water hardness, Sulphite, Free chlorine, Ammonium, Nitrate, Copper, Peracetic acid, Ascorbic acid, Fluoride and Phosphate. These tests allows a quick and easy method to determine these free/available ions in solution. 100 strips per pack

reference: WHIS-012-001, interval: 3 - 4 - 7 - 14 - 21, range: 0-21 °d, parameter: water hardness, pcs/pack: 1