| 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.