| Purity | 99.5% min |
| Particle size | -3.0 μm |
| K2O | 0.3% max |
| SiO2 | 0.3% max |
| Fe2O3 | 0.3% max |
| Al2O3 | 0.3% max |
| CaO | 0.03% max |
| H2O | 0.05% max |
| Lead Tungstate | Cesium Tungstate | Calcium Tungstate |
| Barium Tungstate | Zirconium Tungstate |
| Cerium Vanadate | Calcium Vanadate | Strontium Vanadate |
| Lead Stannate | Copper Stannate |