| Item | Specificatie |
| Analyse | ≥55.0% |
| Sulfaat | 16 + 2.0% |
| PH | 3.0-6.0 |
| Houdbaarheid | 2 jaar |
| Vocht | ≤3.0% |
| Ontstoken residu | ≤3.0% |
| Zware metalen (mg/kg) | ≤20.0 |
| Arsenicum (mg/kg) | ≤2.0 |
| Ammoniumzout | ≤1.0% |