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Impurities content (weight %) | |
---|---|
Insoluble in water substances | <0.005 |
Sulfates (SO42-) | <0.005 |
Chlorides (Cl-) | <0.003 |
Ammonium salts (NH4+) | <0.005 |
Iron (Fe2+) | <0.005 |
Potassium + Sodium + Calcium (K+ + Na+ + Ca2+) | <0.15 |
pH of 5%-water solution | 2,0 - 3,0 |