Testing Item | Requirement | Result |
Phosphorus (P)≥ | 21.0% | 21.5% |
Solubility in Water P | 17.85% | 17.95% |
Solubility in Citric Acid at 2% | 19.95% | 19.97% |
Calcium (Ca)≥ | 15.0% | 17.3% |
Arsenic (As) ≤ | 30ppm | 10ppm |
Heavy Metals (Pb)≤ | 30ppm | 10ppm |
Fluoride (F)≤ | 0.18% | 0.15% |
Size (pass 0.2-2mm) min | 95% | 97.2% |