|
Item |
Specification |
|
ZrO2+HfO2 |
33.0% Min. |
|
SiO2 |
0.01% Max. |
|
Fe2O3 |
0.01% Max. |
|
Na2O |
0.1% Max. |
|
TiO2 |
0.001% Max |
| SO4 | 50-60% Max. |