| Glass sample | Starting glass composition (mol%) | O/P ratio | (DR) (g・cm−2・min−1) | ρ (g/cm3) | ||
|
| Cr2O3 | PbO | P2O5 |
| 24 days | ±0.02 |
| S1 | 1 | 44 | 55 | 2.92 | (1.07 ± 0.20) × 10−6 | 4.175 |
| S2 | 2 | 43 | 55 | 2.94 | (5.79 ± 0.20) × 10−8 | 4.238 |
| S3 | 3 | 42 | 55 | 2.96 | (2.90 ± 0.20) × 10−7 | 4.134 |
| S4 | 4 | 41 | 55 | 2.98 | (2.02 ± 0.20) × 10−7 | 4.136 |