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Impurities content (weight %) | |
---|---|
Insoluble in water substances | <0.0005 |
Ytterbium (Yb3+) | <0.001 |
Lutetium (Lu3+) | <0.001 |
Erbium (Er3+) | <0.001 |
Iron (Fe2+) | <0.0005 |
Calcium (Ca2+) | <0.005 |
Copper (Cu2+) | <0.0001 |
Chlorides (Cl-) | <0.001 |