| No. of eluent | Absorbency at 280 nm |
| 1 | 0.145 |
| 2 | 0.224 |
| 3 | 0.088 |
| 4 | 0.055 |
| 5 | 0.050 |
| 6 | 0.046 |
| 7 | 0.029 |
| 8 | 0.013 |
| 9 | 0.017 |
| 10 | 0.020 |
| 11 | 0.016 |
| 12 | 0.018 |
| 13 | 0.011 |
| 14 | 0.014 |
| 15 | 0.017 |
| 16 | 0.008 |
| 17 | 0.017 |
| 18 | 0.014 |
| 19 | 0.015 |
| 20 | 0.051 |