Titrant ANALYSIS KIT Total hardness kit - 1 ° F

Titrant ANALYSIS KIT Total hardness kit - 1 ° F

TOTAL HARDNESS - Instructions for use

1. Repeatedly rinse the tube with the water to be tested by filling it up to the 5ml mark.

2. Add 1-2 drops of hardness indicator and shake. In the presence of hardness higher than 3 ppm CaCO3 the water turns red (in the absence of hardness the water turns pure blue. In the presence of traces of hardness. The water turns purple for about 1 ppm. gray for about 2 ppm and in dirty pink between 2 and 3 ppm CaCO3).

3. Add the titrant solution drop by drop, and shake after adding each drop. Count the drops needed to achieve the red to blue color change. Each drop consumed corresponds to 1 ° fr. (1 French degree = 10 ppm CaCO3).

4. For water with low hardness proceed as above, filling the tube up to the 10 ml mark. and adding 2-4 drops of indicator. In this case, each drop of titrant solution corresponds to 0.5 French degrees.