| ITEM | SPECIFICATION | RESULT |
| Content% | 99.999%Min | 99.9999% |
| Residue on ignition | 0.001%Max | 0.00096% |
| Ni | 0.00001%Max | 0.0000099% |
| Zn | 0.00005%Max | 0.000045% |
| Ca | 0.00001%Max | 0.0000099% |
| Pb | 0.00005%Max | 0.000043% |
| Fe | 0.00001%Max | 0.0000086% |
| Cu | 0.00001%Max | 0.0000086% |
| Ag | 0.00005%Max | 0.000045% |
| Ti | 0.0005%Max | 0.00043% |
| Bi | 0.00001%Max | 0.0000086% |
