| TEST ITEM | SPECIFICATION% |
| CUSO4·5H2O | 99.0 MIN. |
| Ca | 0.001 max |
| Pb | 0.001 max |
| As | 0.0005 max |
| Cl | 0.002 max |
WATER INSOLUBLES |
0.005 MAX. |
Fe |
0.002 max |
Co |
0.0005 max |
Ni |
0.002 max |
Zn |
0.002max |
PH (5%,20℃) |
3.5~4.5. |
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