Ystersulfaat
Spesifikasies
| Item | Standaard |
| Fe2+ | ≥17.6% |
| Onoplosbare materiaal | ≤0.1% |
| Hg | ≤0.00001 % |
| Cr | ≤0.0005% |
| As | ≤0.002% |
| Pb | ≤0.002% |
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Spesifikasies
| Item | Standaard |
| Fe2+ | ≥17.6% |
| Onoplosbare materiaal | ≤0.1% |
| Hg | ≤0.00001 % |
| Cr | ≤0.0005% |
| As | ≤0.002% |
| Pb | ≤0.002% |