| GOLD SEAL | SILVER SEAL | WHITE SEAL | |
| Purity (After Ignition) | 99.90% | 99.50% | 99.50% |
| Specific Gravity | 5.5-5.65 | 5.5-5.65 | 5.5-5.65 |
| Moisture Content | 0.2% max. | 0.2% max. | 0.2% max. |
| Loss of Ignition @ 850 C | 0.3 max. | 0.5 max. | 0.5 max. |
| Iron As Fe | < 0.001% | < 0.002% | 0.003% |
| Copper As Cu | < 0.001% | < 0.001% | 0.001% |
| Cadmium As Cd | < 0.001% | < 0.005% | 0.01% |
| Lead As Pb | < 0.002% | 0.10% | 0.15% |
| Sieve Residue Through 325 Mesh Passing | 99.99% | 99.99% | 99.85% |
| Free Metallic Zinc | < 5 Spots | < 5 Spots | < 50 Spots |
