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| Impurities content (weight %) | |
|---|---|
| Sulfates (SO42-) | <0.005 |
| Chlorides (Cl-) | <0.01 |
| Iron (Fe2+) | <0.0001 |
| Potassium (K+) | <0.02 |
| Кальций (Ca2+) | <0.001 |
| Magnesium (Mg2+) | <0.001 |
| Sodium (Na+) | <0.003 |
| Rubidium (Rb+) | <0.1 |
| Heavy metals (Pb2+) | <0.001 |



