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Impurities content (weight %) | |
---|---|
Insoluble in water substances | <0.08 |
Arsenites (AsO32-) | <0.005 |
Sulfates (SO42-) | <0.02 |
Chlorides (Cl-) | <0.002 |
Nitrates (NO3-) | <0.005 |
Iron (Fe2+) | <0.001 |