| Elemental composition of the grafted surface Energy: 6.686 KeV, Counts: 250 | |
| wt. % ± SD | Elements |
| 44.4 ± 0.1 | O |
| 38.6 ± 0.1 | Si |
| 6.0 ±0.0 | Na |
| 5.5 ± 0.0 | Ca |
| 2.4 ± 0.0 | Mg |
| 1.5 ± 0.0 | Ti |
| 0.3 ± 0.0 | K |
| 0.3 ± 0.0 | Al |
| 0.3 ± 0.0 | Fe |
| Elemental composition of the core glass Energy: 6.686 KeV, Counts: 250 | |
| wt. % ± SD | Elements |
| 47.2 ± 0.1 | O |
| 36.2 ± 0.1 | Si |
| 4.3 ± 0.0 | Na |
| 6.0 ± 0.1 | Ca |
| 2.4 ± 0.0 | Mg |
| 2.1 ± 0.1 | Sn |
| 0.3 ± 0.0 | K |
| 1.0 ± 0.0 | Al |
| 0.4 ± 0.1 | Fe |
| 0.1 ± 0.0 | Cl |