| BATCH NO | : | 270905A |
| MOL. FORMULA | : | H2O |
| M.W | : | 18.015 |
| Ph | : | 5.5 - 7.5 |
| Chloride ( cl ) | : | 0.0001 |
| Silicate | : | 0.0001 |
| Sulphate | : | 0.0002 |
| Iron | : | 0.00001 |
| Hydrocarbon | : | Nil. |
| Substances reducing permagnate | : | 0.00004 |
A wide tolerance for the reaction is allowed because of the readiness with which water absorbs carbon dioxide from the air.