Chemical test kit for the determination of free and total chlorine in the range 0.0-0.70/0.0-3.5 mg / l (ppm). 200 tests

Chemical test kit for the determination of iron in the range 0-5 mg / l (ppm). 50 tests

The HANNA test kit for ozone determines the ozone concentration in water via checker disc. The reaction between ozone and the reagent causes a pink tint in the sample which is proportional to the ozone concentration.