Content | Limits |
---|---|
Appearance | Blue Colored Crystals |
Copper as Cu | 25.5% Min |
Nickel as Ni | 0.03% Max |
Iron as Fe | 0.05% Max |
Lead as Pb | 0.002% Max |
Cadmium as Cd | 0.001% Max |
Arsenic as As | 0.0005% Max |
Mercury as Hg | 0.0005% Max |
Insoluble matter in water | 0.02% Max |