Element	Content (Impurities ≤, Co ≥)/%
Element	Electrolytic cobalt by experiment	Standard of Co1	Standard of Co1A
Co≥	99.88	99.98	99.65
Mn	0.0005	0.001	0.01
Fe	0.001	0.003	0.05
Ni	0.051	0.005	0.2
As	0.001	0.0005	0.001
Pb	0.0004	0.0003	0.001
Cu	0.001	0.001	0.02
Si	0.001	0.001	-
Al	0.01	0.001	-