| Assay | ZnSO4·7H2O: 99.7% |
| Identification | Positive for Zinc and Sulfate |
| Alkalies and Alkaline Earths | 0.0038 |
| PH Value | 4.4-5.6 (5% solution) |
| Arsenic (As) | < 0.01 mg/kg |
| Lead (Pb) | 0.082 mg/kg |
| Cadmium (Cd) | 0.043 mg/kg |
| Mercury (Hg) | 0.004 mg/kg |
| Selenium | < 0.002 mg/kg |
| Total Plate Count | < 10 CFU/g |
| Yeast and Moulds | < 10 CFU/g |
| Staphylococcis Aureus | Absent |
| Salmonella | Absent |
| Shigella | Absent |
| Escherichia. Coli | Absent |
| Enterobacteria | Absent |
| Coliform | < 10 CFU/g |
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