Definition
pH is the negative logarithm of the hydrogen ion concentration in solution.
Description
A measure of the acidity or alkalinity of a solution, numerically equal to 7 for neutral solutions, increasing with increasing alkalinity and decreasing with increasing acidity. The pH scale ranges from 0 to 14.
Why is pH important?
pH gives an indication of the acidity or alkalinity of groundwater.
Source: http://www.fatalii.net
pH guidelines
