| ITEM | INDEX |
| K2SO4( AS PER SO4) W/% ≥ | 99.0 |
| K2SO4( AS PER K) W/% ≥ | 99.0 |
| Arsenic（As）w/% ≤ | 0.0002 |
| Water Insoluble w/%≤ | 0.01 |
| Ph(50g/l,25℃) | 6.0-8.0 |
| Calcium (Ca) w/% ≤ | 0.02 |
| Ferric(Fe)w/% ≤ | 0.0005 |
| Chloride(as potassium chloride w/%≤ | 0.001 |
| Sodium(Na) w/% ≤ | 0.1 |
| Magnesium(Mg)w/% ≤ | 0.005 |
| Heavy metals(Pb) w/% ≤ | 0.001 |
| Mesh size | As per customer require |
