... with colorimetric chart, come out a result.Note: SO32-, S2O32-, NO3-, SCN-, I-, Pd2+, Hg2+, Cu2+ will affect the result.4 ... drinking water test kit LH-P09Chromate test kit LH-P10Chloridion test kit LH-P11Alkalinity of water test kit LH-P12Total Phosphorus test kit LH-P13Arsenic test kit LH-P14Sulfide test kit LH-P15Sulfite test kit LH ...