| ITEM | STANDAARD |
| Zuiverheid | 99.8% min. |
| Water | Max. 0.1% |
| Asgehalte | Max. 0.03% |
| PH | 7.5-9.5 |
| Troebelheid, graad | Max. 20 |
| Coloruity (PT-Co)through, graad | Max. 20 |