Model | BT-1 | BT-2 | BT-3 |
Purity | 99.5% min | 99% min | 99% min |
SrO | 0.01% max | 0.1% max | 0.3% max |
Fe2O3 | 0.01% max | 0.1% max | 0.1% max |
K2O+Na2O | 0.01% max | 0.1% max | 0.1% max |
Al2O3 | 0.01% max | 0.1% max | 0.1% max |
SiO2 | 0.1% max | 0.1% max | 0.5% max |
Lead Tungstate | Cesium Tungstate | Calcium Tungstate |
Barium Tungstate | Zirconium Tungstate |
Cerium Vanadate | Calcium Vanadate | Strontium Vanadate |
Lead Stannate | Copper Stannate |