The typical chemical composition is as follows:
| SiO2 | 81% |
| B2O3 | 13% |
| Na2O / K2O | 4% |
| Al2O3 | 2% |
It’s virtually free of elements from the Magnesia-Lime-Zinc group and completely free of arsenic and other heavy metals.
The typical chemical composition is as follows:
| SiO2 | 81% |
| B2O3 | 13% |
| Na2O / K2O | 4% |
| Al2O3 | 2% |
It’s virtually free of elements from the Magnesia-Lime-Zinc group and completely free of arsenic and other heavy metals.