Index | High grade | First grade |
Assay (Ni) | 22.2%min | 22%min |
Co | 0.0005%max | 0.05%max |
Cu | 0.0001%max | 0.001%max |
Fe | 0.0005%max | 0.001%max |
Pb | 0.0001%max | 0.001%max |
Zn | 0.0001%max | 0.001%max |
Mn | 0.0005%max | 0.005%max |
Ca | 0.001%max | 0.005%max |
Na | 0.005%max | 0.005%max |
Cd | 0.001%max | 0.001%max |
Cl | 0.01%max | 0.01%max |
Waterinsoluble | 0.005%max | 0.01%max |