| Element | Composition, % (m/m) |
|---|---|
| Zinc | 98.65% Min |
| Lead | 1.23 % Max |
| Cadmium | 50 ppm Max |
| Iron | 250 ppm Max |
| Copper | 250 ppm Max |
| Antinomy | 150 ppm Max |
| Arsenic | 200 ppm Max |
| Silver | 100 ppm Max |
Prime Western Grade
| Element | Composition, % (m/m) |
|---|---|
| Zinc | 98.65% Min |
| Lead | 1.23 % Max |
| Cadmium | 50 ppm Max |
| Iron | 250 ppm Max |
| Copper | 250 ppm Max |
| Antinomy | 150 ppm Max |
| Arsenic | 200 ppm Max |
| Silver | 100 ppm Max |