Type Of Test | Standard | Observed |
Description | Green colored crystalline | Green colored crystalline powder |
powder | ||
Assay (Min) | 99.0% | 99.89 |
Insoluble matter | <0.005% | 0.004% |
pH (5% water) | 3.0 – 4.0 | 3.60 |
Chloride (Cl) | <0.0005% | 0.0003% |
Nitrogen compounds (N) | <0.001% | 0.00058% |
Phosphate (PO4) | <0.001% | 0.0009% |
Copper (Cu) | <0.001% | <0.001% |
Ferric Iron (as Fe) | <0.02% | 0.01% |
Lead (Pb) | <0.0005% | 0.0004% |
Manganese (Mn) | <0.05% | 0.04% |
Zinc (Zn) | <0.005% | 0.0038% |
Subs not pptd by | ||
ammonia (as sulphate) | <0.05% | 0.04% |