pH is a measure of the acidic or basic (alkaline) nature of a solution. The pH scale ranges from 0 (most acidic) to 14 (most basic).
- A neutral solution (pure water) has a pH of 7.
- Solutions with a pH less than 7 are acidic, with 0 being the most acidic.
- Solutions with a pH greater than 7 are basic (alkaline), with 14 being the most basic.
| By | Healthwise Staff |
| Primary Medical Reviewer | E. Gregory Thompson, MD - Internal Medicine |
| Specialist Medical Reviewer | Robert L. Cowie, MB, FCP(SA), MD, MSc, MFOM - Pulmonology |
| Last Revised | June 14, 2010 |
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