Test items | Standard value | Test data | Test judgement |
Exterior | White powder or granules White powder | White powder | qualified |
Main content (as K3PO4)w/% | ≥97 | 98.33 | qualified |
Water insoluble matter w/% | ≤0.2 | 0.03 | qualified |
Heavy metal (calculated as Pb)mg/kg | ≤10 | <10 | qualified |
Arsenic (As) mg/kg | s3 | 0.1 | qualified |
Fluorine(F) mg/kg | ≤10 | 3 | qualified |
Lead(Pb)mg/kg | ≤2 | 0.1 | qualified |
PH value (10g/L solution) | 11.5~12.5 | 12.12 | qualified |
Loss on ignition w/ | ≤5 | 3.5 | qualified |
K2O w/% (dry basis) | - | 66.11 | qualified |
P2O5 w/% (on a dry basis) | - | 32.17 | qualified |