Hlau Sulfate
Cov Lus Qhia Tshwj Xeeb
| Khoom | Tus Qauv |
| Fe2+ | ≥17.6% |
| Cov khoom tsis yaj | ≤0.1% |
| Hg | ≤0.00001% |
| Cr | ≤0.0005% |
| As | ≤0.002% |
| Pb | ≤0.002% |
Sau koj cov lus ntawm no thiab xa tuaj rau peb
Cov Lus Qhia Tshwj Xeeb
| Khoom | Tus Qauv |
| Fe2+ | ≥17.6% |
| Cov khoom tsis yaj | ≤0.1% |
| Hg | ≤0.00001% |
| Cr | ≤0.0005% |
| As | ≤0.002% |
| Pb | ≤0.002% |