Calcium Hardness Test Kits

1. Fill mixing bottle with water sample to 25 ml mark.
2. Add 1 scoop of Calcium Indicator Powder and swirl to mix.
3. Add 6 drops of Calcium Buffer Solution and swirl.
4. If the water turns Blue, no Calcium is present and report as 0 ppm.
5. If the water turns Purple or Red, hardness is present.
6. Add titrating solution, drop by drop, swirling the vial until the solution turns Blue.
7. The calcium hardness is the number of drops times the factor of the test.