| Result | Limits | |
| Assay: | 102.6% | 99.0% min. |
| Insoluble Matter: | < 0.001% | 0.01% max. |
| Phosphate: | < 0.001% | 0.001% max. |
| Sulfate: | < 0.01% | 0.01% max. |
| Copper: | 0.0002% | 0.005% max. |
| Zinc: | 0.0006% | 0.005% max. |
| Arsenic: | < 10 ppm | 10 ppm max. |
| Sodium: | 0.001% | 0.005% max. |