pH scale
Some examples of the pH scale:
| pH value | Examples |
|---|---|
| 0 | Hydrochloric acid (HCl) |
| 1 | Gastric juice |
| 2 | Lemon juice |
| 3 | Vinegar |
| 4 | Cola drink |
| 5 | Black coffee |
| 6 | Milk |
| 7 | Pure water (neutral) |
| 8 | Baking soda dissolved in water |
| 9 | Liquid soap |
| 10 | Household bleach |
| eleven | Clean ovens |
| 12 | Laundry soap |
| 13 | drain cleaner |
| 14 | Sodium hydroxide (NaOH) |
Recommended pH range for swimming pools:
- 7.2 - 7.8 (ideal for bathroom).