| TEOS dosage (ml) | Decolorization rate (%) | |||||
| 3 min | 6 min | 9 min | 12 min | 15 min | 18 min | |
| 0.3 | 74.5 | 31.7 | 78.9 | 89.9 | 92.4 | 92.4 |
| 0.5 | 75.7 | 92.7 | 97.9 | 98.2 | 99.9 | 99.9 |
| 1.0 | 47.1 | 62.6 | 69.0 | 71.7 | 72.9 | 72.9 |
| 1.5 | 35.6 | 47.0 | 48.6 | 50.2 | 50.2 | 50.2 |