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pH Scale

Author: Dr Kelvin Klemm

( Article Type: Explanation )

The pH scale is a measure of either acidity or alkalinity. It is a logarithmically derived scale, which is presented as a scale from 1 to 14. The number 1 represents highly acidic while the number 14 represents highly alkaline. The number 7 is neutrality. A domestic swimming pool is typically maintained at a pH of about 7.3.