|
item (indirect method) |
First grade |
Second grade |
Third grade |
|
ZnO dry |
99.7min |
99.7min |
99.7min |
|
Pb |
0.037max |
0.06max |
0.1max |
|
Mn |
0.0001max |
0.0001max |
0.0001max |
|
Cu |
0.0002max |
0.0002max |
0.0002max |
|
Insoluble in hydrochloric acid |
0.006max |
0.01max |
0.1max |
|
Loss on ignition |
0.2max |
0.2max |
0.2max |
|
Screen residues(through 45 micron wet screen) |
0.1max |
0.1max |
0.1max |
|
volatile( 105 degree Celsius) |
0.3max |
0.3max |
0.3max |