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Langelier Saturation Index Calculator


Please enter the swimming pool waters Total Alkalinity, Calcium Hardness, Temperature and measured pH.
Left Click the Calculate button to calculate the swimming pool water Langelier Saturation Index.
Total Alkalinity:
Calcium Hardness:
Temp. (°F):
pH:
A calculated Langelier Saturation Index of 0 is the ideal indication that the water is perfectly balanced.

If the Langelier Saturation Index falls between +0.3 and -0.3 The water is still considered balanced and no adjustments to the pool water are needed.

A Langelier Saturation Index higher than +0.3 specifies the likelihood that the pool water has scale-forming capabilities.

A Langelier Saturation Index lower than -0.3 specifies the probability that the pool water to be corrosive.

The Langelier Saturation Index is similar to pH in that it is logarithmic. A difference of 1.0 comes to ten times the severity of the calculation.

Thank you for using our Langelier Saturation Index Calculator