Products General Lab Instruments Water Hardness Kit

Water Hardness Kit


Water hardness has traditionally been defined as the capacity of water to precipitate soap. The ionic species in the water causing the precipitation was later found to be primarily calcium and magnesium. In the present, therefore, water hardness is actually a quantitative measure of these ions in the water sample. It is also now known that certain other ion species, such as iron, zinc and manganese, contribute to the overall water hardness. The measure and subsequent control of water hardness is essential to prevent scaling and clogging in water pipes.

The HI 3812 test kit tests the hardness level as mg/L (ppm) calcium carbonate, via an EDTA (ethylene-diamine-tetraacetic acid) titration.

Order Information:

HI 3812 test kit comes with 30 mL hardness buffer, 10 mL calmagite indicator, 120 mL EDTA solution, 20 mL plastic beaker with cap, 50 mL plastic beaker with cap and 1 mL syringe with tip





Method Range Smallest Increment Chemical Method Number of Tests Weight


0.0-30.0 mg/L0-300 mg/L 0.3 mg/L3 mg/L EDTA 100 460 g

[Our Instrument comes with Calibration certificate traceable to NPL / NABL, Warranty certificate and detailed user manual].