Indicator strips and papers for quick tests: pH papers and strips, litmus paper, and semi-quantitative test strips for common ions and chemicals.
pH papers cover the full 1 to 14 range as rolls, books and strips, with narrow-range comparator paper and red and blue litmus. Semi-quantitative strips test for chlorine, chlorine dioxide, peroxide, peracetic acid, quaternary ammonium (QAC), nitrate, nitrite, ammonia, chloride, fluoride, sulphite, water hardness, calcium, copper, nickel, zinc and ascorbic acid.
