Expert Water Hardness test made simple. Water Hardness TNTplus® chemistry and your Hach spectrophotometer are engineered to simplify water analysis for accurate results, everytime. For photometric determination of Water Hardness (Calcium + Magnesium) by the Metalphthalein method.…

Dilution Water, Organic Free. For UV-254 and TOC methods. 500 mL bottle.

Demineralized Type 2 Water . Specific Conductance: ≤1 µS/cm Silica (SiO2): ≤30 µg/L Chloride (Cl-): ≤20 µg/L Hardness: Negative Consumption of KMnO4: Negative