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Impurities content (weight %) | |
---|---|
Insoluble in water substances | <0.001 |
Sulfates (SO42-) | <0.001 |
Nitartes (NO3-) | <0.001 |
Iron (Fe2+) | <0.0002 |
Sodium+Potassium+Calcium (K++Na++Ca2+) | <0.0001 |
Arsenic (As3+) | <0.000005 |
Heavy metals (Pb2+) | <0.000005 |