Palintest Calcium Hardness Test. Simple method for determining calcium hardness of pool water.
To a 50 or 100mls sample of pool water add one calcium hardness reagent tablet. Shake container until reagent tablet disintegrates. Continue adding reagent tablets until the colour of the water sample changes from pink to violet. Note the number of reagent tablets used and calculate the result in mg/l (ppm) from the formula shown in the instructions.
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Corrosive Substance No