ITEM | quality | ||
Special class | First class | Eligible | |
ZnO % >= | 99.70 | 99.50 | 99.40 |
Water | 0.1 | 0.1 | 0.15 |
Zn | - | - | 0.08 |
Pb Oxide | 0.037 | 0.05 | 0.14 |
Mu Oxide | 0.0001 | 0.0001 | 0.0003 |
Cu Oxide | 0.0002 | 0.0004 | 0.0007 |
Hydrochloric acid insoluble | 0.006 | 0.008 | 0.05 |
Burnning lost | 0.2 | 0.2 | 0.2 |
The rest of select | 0.1 | 0.15 | 0.2 |
Volatile | 0.3 | 0.4 | 0.5 |