Description

Item                        Index (%)
Grade A
Reduction degree(by Cu2O)    ≥ *8.0
Copper (metal)              ≤ 1.0
Assay (by Cu2O)             ≥ *7.0
Copper (Cu)                 ≥ *7.0
Chloride (Cl)               ≤ 0.5
Sulfate(SO4)                ≤ 0.5
Water content               ≤ 0.5
Acetone Soluble substances  ≤ 0.5
Decrease of reduction degree after stability study    ≤ 2.0
Mesh residue (*5μm)        ≤ 0.3
Nitric Acid insoluble substances (residue on *5μm mesh)≤ 0.1
Metals other than copper    ≤ 0.5