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Item | Superior grade | Industrial grade | ||||||||
Content %,(dry basis)≧ | 99 | 98 | 97 | 98 | 97 | 50-55 liquid | ||||
Ferrum %,≦ | 0.0001 | 0.0002 | 0.0003 | 0.0005 | 0.0006 | 0.0001 | ||||
Water Insoluble%,≦ | 0.005 | 0.006 | 0.007 | 0.006 | 0.007 | 0.001 | ||||
Moisture%,≦ | 0.5 | 1 | 1 | 1 | 1 | -- | ||||
Chloride%,≦ | 0.02 | 0.03 | 0.04 | 0.05 | 0.08 | 0.01 | ||||
Sulfate%,≦ | 0.03 | 0.04 | 0.04 | 0.1 | 0.3 | 0.02 | ||||
Heavy Metal%,≦ | 0.001 | 0.001 | 0.001 | 0.001 | 0.001 | 0.0005 | ||||
PH | 6-8 | 6-8 | 6-8 | 6-8 | 6-8 | 6-8 | ||||









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