Directions for Use (25 ? 500 PPM): 1. Take 10 ml of water sample to be tested in the test jar. 2.Add one spoonful (provided herewith) of TH 1. 3.Mix contents well to dissolve. 4. Then add 10?12 drops of TH 2, and mix contents well. 5.Now drop wise* add TH 5, counting the number of drops while mixing, until the colour changes from red to blue.
|| Water Hardness Testing Kit