Cobalt Sulphate Co 20.40%min Mn 0.02%max Cu 0.01%max Fe 0.008%max Mg 0.16%max Ca 0.06%max Na 0.05%max Insolubles 0.02%max Material: Cobalt Sulfate (Co 20.5%min) Specs : Guarantee Typical Co 20.50%min 20.75% Ni 0.002%max 0.001% Fe 0.003%max 0.001% Cu 0.004%max 0.001% Mn 0.005%max 0.001% Zn 0.005%max 0.001% Cd 0.002%max 0.0016% Pb 0.002%max 0.001% As 0.002%max 0.001% Water insoluble : 0.03%max 0.01%max Packing : inner plastic woven bag of 25 kgs net each. Material: Cobalt Sulphate (Co 21%min) Specs : Guarantee Typical Co 21%min 21.04% Ni 0.001%max 0.001% Fe 0.0008%max 0.0006% Cu 0.0003%max 0.0002% Mn 0.0005%max 0.0002% Zn 0.0003%max 0.0002% Mg 0.001%max 0.001% Na 0.0015%max 0.001% Ca 0.001%max 0.001% Si 0.0025%max 0.001% Pb 0.001%max 0.001% As 0.001%max 0.001% Water insoluble : 0.01%max 0.01% Packing : inner plastic woven bag of 25 kgs net each