2) Enwere ike ịbanye nkwekọrịta nzuzo
3) nkwa nkwụghachi ụbọchị asaa
Ihe dị mkpa: anyị nwere ike ịnye ọ bụghị naanị ngwaahịa, mana ọrụ ngwọta teknụzụ!
| NGWA | Nsonaazụ |
| Assay (CuO) | 99% nkeji |
| Fe | 0.2% kacha |
| Cd | 0.005% kacha |
| Chlorhydricacid enweghị mgbaze | 0.2% kacha |
| Mmiri Soluble bekee | 0.1% kacha |
| Chloride (Cl-) | 0.2% kacha |
| SO4 | 0.2% kacha |
| Pb | 0.02% kacha |
| Hg | 0.005% kacha |
| Ụdị | Epoch-Chem |