Lovibond® Water Testing Tintometer® Group

Langelier Index

Langelier Index / Balanced Water Calculation is used to determine the corrosive or scale forming nature of pool water.
Parameters used to determine the Langelier Index are:

- pH

- Temperature

- Alkalinity

- Calcium Hardness


Some modern pool photometers like the 9 in 1 and Pool Direct will automatically calculate the Langelier Index. When using Comparator Systems or other visual Balanced Water Kits, a table is provided to enable accurate calulations to be performed.

For details of instruments for testing Langelier Index, please see the Balanced Water parameter.


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