| ≥1 piece |
Item | Industrial grade | Food grade |
Total phosphate, as P2O5 | 68.0 | 68.0 |
Inactive phosphate, as P2O5 % ≤ | 7.5 | 7.5 |
Iron, as Fe % ≤ | 0.03 | 0.03 |
Ph value (1% solution) % ≤ | 5.8-7.0 | 5.8-6.5 |
Water insoluble % ≤ | 0.04 | 0.05 |
Heavy metals, as Pb % ≤ | 0.001 | |
Arsenic, as As % ≤ | 0.0003 | |
Fluoride as F % ≤ | 0.003 |