The Pool Clinic

office (+61 2) 9791-9700
fax (+61 2) 9791-0267
ACN. 59 000 194 392
7 Eldon Avenue, Georges Hall NSW 2198

Langelier Calculator

Saturation Index = pH + Calcium Hardness factor + Total Alkalinity factor + Temperature factor - 12.1

In the above formula:
Calcium Hardness - Optimum range 75 to 150 mg/liter.
Total Alkalinity - Optimum range 40 to 150 mg/liter.
Temperature in Degrees Centigrade - Optimal range between 27 and 29.5 Degrees C in commercial pools, between 17 and 24 in domestic pools.
pH - Optimum range 7.2 to 7.6.


Required Data Entry
Total Alkalinity
Calcium Hardness
Temperature
Measured pH
   
Calculated Results
Langelier Saturation Index