℃ ℉ Ti Calcium
Hardnedss
Ci Total
Alkalinity
Ai
12 53 0.3 75 1.5 75 1.9
16 60 0.4
100 1.6 100 2.0
125 1.7 125 2.1
19 66 0.5 150 1.8 150 2.2
24 76 0.6
200 1.9 200 2.3
250 2.0 250 2.4
29 84 0.7 300 2.1 300 2.5
34 94 0.8
400 2.2 400 2.6
600 2.4 600 2.8
39 103 0.9 800 2.5 800 2.9
How to use: Measure pool pH, temperature, calcium hardness, and total
alkalinity. Use the chart above to determine Ti, Ci,and Ai from your
measurements. Insert values of pH, Ti, Ci and Ai into the above equation.
If Si equals 0.2 or more, scaling andstaining may occur. If Si equals -0.2
or less corrosion or irritation may occur.
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