| Item | Specification | Test Results |
| Content(FeSO4.H2O) % | 91.0% | 91.1% |
| Appearance | Off-white Powder or Granular | Pass |
| Fe % | ≥30.0 | 30.1 |
| Heavy Metal (Pb) | 15ppm MAX | 8ppm |
| Cd | 3ppm MAX | 2ppm |
| As | 2ppm MAX | 1ppm |
| Hg | 0.1 ppm max | 0.005 ppm |