Glass Composition of the Newly Developed Glass (Glass A), FIOLAX® Glass (Glass B), and Two Comparative Neutral Borosilicate Glasses (Glass C and Glass D); All Glasses Were Characterized by Using X-Ray Fluorescence Spectroscopy
| Elements | Glass A | Glass B | Glass C | Glass D |
|---|---|---|---|---|
| SiO2 | 73 | 75 | 72 | 72 |
| B2O3 | 11.0 | 10.5 | 10.5 | 11.4 |
| Al2O3 | 6.9 | 5.4 | 7.1 | 6.8 |
| Na2O | 7.3 | 7.1 | 6.3 | 6.7 |
| K2O | 0.5 | <0.01 | 1.9 | 2.0 |
| Li2O | <0.01 | <0.01 | <0.01 | <0.01 |
| BaO, CaO, MgO, SrO | 0.5 | 1.5 | 2.0 | 1.0 |