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| ITEM | SPECIFICATION | RESULT |
| Appearance | Colorless or white crystal | Colorless or white crystal |
| Identification | Complies with the limit Test | Conforms |
| Clarity&Colour of Solution | Pass test | Pass test |
| Purity | 99.5~101.0% | 99.94% |
| Moisture | < 1.0% | 0.14% |
| Sulphated Ash | ≤0.05% | 0.01% |
| Sulphate | ≤150ppm | <150ppm |
| Oxalic acid | ≤100ppm | <100ppm |
| Heavy Metals | ≤5ppm | <5ppm |
| Readily Carbonisable Substance | Pass test | Pass test |
| Bacterial Endotoxin | <0.5IU/mg | <0.5IU/mg |
| Aluminium | ≤0.2ppm | <0.2ppm |
| Lead | ≤0.5ppm | <0.5ppm |
| Arsenic | ≤1ppm | < 1ppm |
| Mercury | ≤1ppm | < 1ppm |
| Mesh | 30-100MESH |