Basic describes the level of base present in swimming pools, or how much pool water behaves like a base.
What is a Basic?
The term basic describes the amount of base has been added to a solution, or how much a solution behaves like a base. The more base present in a solution, the more basic the resulting mixture.
How basic aqueous (water) solutions are measured is by pH. Any value over 7.0 is considered basic, or more specifically, alkaline. The higher the value over 7.0, the higher the pH and the more basic the solution.
As the generally considered ideal swimming pool water has a pH of 7.5, the water is slightly basic. This reduces the corrosive effects of more acidic water, plus helps increase the comfort level of swimmers, as moisture on the eyes and human tears are also about 7.5 pH.
- “Pool & Spa Water Chemistry, A Testing and Treatment Guide, Waterproof Edition, 2005. Taylor”
- “Wikipedia: Acid”, http://en.wikipedia.org/wiki/Basic_(chemistry)