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Industrial Grade | |
| ITEM | STANDARD |
| Purity % | 98-100.5 |
| Cl % | ≤0.007 |
S % | ≤0.0002 |
| SO4 % | ≤0.007 |
| Residue % | ≤0.05 |
| Fe % | ≤0.002 |
| As % | ≤0.0002 |
| Heavy metal(as pb)% | ≤0.0005 |
| Moisture % | |
Food Grade | |
| ITEM | STANDARD |
| Purity % | 99.2 min |
| Cl % | 0.003 max |
SO4 % | 0.007 max |
| As % | 0.0002 max |
| Heavy metal(as pb)% | 0.0005 max |
Residue (Non-Volatile) | 0.05%max |
Salmonella | NEGATIVE |
Colibacillus | NEGATIVE |
Shigella | NEGATIVE |