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When pH is 1, 2 3 4 5 or 6, it is considered an Acid. When pH is 8 9 10 11 12 13 or 14, it is considered a Base. 7 is the neutral point of acid and base. pH is calculated by the -log (H+)
Levels from 1.0 to 6.9 are considered as acidic pH, while 7.1 to 14.0 is alkaline pH. 7.0 is the neutral pH. The lower the pH number, the greater the acidity, and a higher pH number indicates greater alkalinity.