
| WT-1855 | Approximate comp. |
| SiO2 | >60.00 |
| CaO | >10.50 |
| MgO | >2.50 |
| Al2O3 | >4.00 |
| ZnO | >4.50 |
| Fe203 | <0.12 |
| K2O | >4.00 |
| Na2O | >0.60 |
| B2O3 | >3.50 |
| WZ-1801 | Approximate comp. |
| SiO2 | 4 |
| CaO | 2 |
| MgO | 0 |
| Al2O3 | 1 |
| ZnO | 0 |
| ZrO2 | 0 |
| K2O | 1 |
| Na2O | 0 |
| B2O3 | 0 |
| BaO | 0 |
| PbO | 0 |
| TiO2 | 1 |
| LiO2 | 0 |
| WT-1868 | Approximate comp. |
| SiO2 | 57 |
| CaO | 8 |
| MgO | 1 |
| Al2O3 | 5 |
| ZnO | 11.69 |
| ZrO2 | 3.58 |
| K2O | 6.27 |
| Na2O | 0.2 |
| B2O3 | 3.23 |
| BaO | 0 |
| PbO | 0.75 |
| TiO2 | 0 |
| LiO2 | 0 |