HI-719-11 Calibration Check Set for the HI-719 Magnesium Hardness Checker HC £26.50 (exc. VAT) View Product
HI-720-11 Calibration Check Set for the HI-720 Calcium Hardness Checker HC £28.00 (exc. VAT) View Product
HI-93735-02 Total Hardness High Range Colorimetric Reagents (100 tests) £64.50 (exc. VAT) View Product
HI-97719-11 CAL Check™ standards for Magnesium Hardness, 0.0 and 1.00 ppm £264.00 (exc. VAT) View Product
HI-97735-11 Total Hardness CAL Check standard kit for HI-977 series photometers £264.00 (exc. VAT) View Product
HI-93735-01 Total Hardness Medium Range Colorimetric Reagents, 100 tests £64.50 (exc. VAT) View Product