HI-720-11 Calibration Check Set for the HI-720 Calcium Hardness Checker HC £28.00 (exc. VAT) View Product
HI-97741 Total hardness and iron LR: Range Iron: 0.00 to 1.60 mg/L, Total Hardness: 0.00 to 4.70 mg/L £507.50 (exc. VAT) View Product
HI-97745 Free and Total Chlorine, Hardness, Iron Low Res, pH portable photometer £507.50 (exc. VAT) View Product