Hardness

How to Use:

1. Fill up the glass tube with sample up to 5 ml.

2. Add five drops of Reagent 1 and swirl.

3. Add five drops of Reagent 2 and swirl.

4. If the water sample turns to blue the sample is considered soft.

5. If the water sample turns wine red; add Reagent 3 drop by drop with continuous shaking until the sample turns blue. Make sure to count the number of drops added to the sample.

Note:

1 drop= 10 ppm or 10 parts per million