Complaint
Specification | First grade | Upper grade |
Appearance | White crystal | White crystal |
Total content % | ≥98 | ≥98 |
P2O5 content % | ≥53 | ≥53 |
N content % | ≥20.8 | ≥20.8 |
Moisture % | ≤0.2 | ≤0.2 |
Water insoluble matters % | ≤0.1 | ≤0.1 |
Heavy metal ( base on Pb ) % | -- | ≤0.001 |
As ( base on As ) % | -- | ≤0.0003 |
Fluoride ( base on F ) % | -- | ≤0.005 |
