| Results | Limits | |
| Assay: | 99.6% | 98.5% min. |
| CuBr2: | < 0.1% | 0.25% max. |
| Water: | < 0.13% | < 0.25% |
| Sulfate: | < 0.01% | 0.1% max. |
| Heavy Metals: | ||
| Mercury: | < 1 ppm | < 25 ppm |
| Arsenic: | < 5 ppm | < 25 ppm |
| Lead: | < 1 ppm | < 50 ppm |
| Zinc: | 3 ppm | < 100 ppm |
| Chromium: | < 1 ppm | < 25 ppm |
| Visual Appearance: | Gray-Green free flowing powder | |
| Screen Size: | < 50 micron | 50 micron max. |