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Parameters | Standards |
Total phosphate, as P2O5 | ≥68% |
Inactive phosphate, as P2O5 | ≤7.5% |
Iron, as Fe %≤ | ≤0.05% |
pH value (1% solution) | 5.8-7.3 |
Solubility | Qualified |
Heavy metals, as Pb | - |
Arsenic, as As | - |
Fluoride as F | - |
Water insoluble matter | ≤0.05% |


