Frit 439
Alternate Names: MexGBSub F439
Description: Gerstley Borate Substitute
| Oxide | Analysis | Formula | Tolerance |
|---|---|---|---|
| SiO2 | 13.89% | 0.29 | |
| B2O3 | 41.32% | 0.75 | |
| Al2O3 | 1.62% | 0.02 | |
| Na2O | 7.97% | 0.16 | |
| MgO | 4.95% | 0.16 | |
| CaO | 30.26% | 0.68 | |
| Oxide Weight | 126.47 | ||
| Formula Weight | 126.47 | ||
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Frit
A frit is the powdered form a man-made glass. Frits are premelted, then ground to a glass. They have tightly controlled chemistries, they are available for glazes of all types. |