1,Property: Granular crystalline powder, odorless
2,Authentication: Granular crystalline powder, odorless    Sulfate:positive
3,Acidity: Meet the specification
4,Arsenic salt: ≤14ppm
5,Lead salt: ≤0.002%
6,Alkali metals and alkali earth metal salt: ≤0.9%
7,Content: 99.0~100.5%(equal to 89.0-90.4% dried Zinc Sulfate)
8,Molecular formula: ZnSO4·H2O