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
|