| Oscillation time min | Oil content (mg/l) | D10 (μm) | P1μm | ||
| Blank | Drugging | Blank | Drugging | ||
| 15 | 862.7 | 342.0 | 1.56 | 1.61 | 60.36 |
| 30 | 528.8 | 143.6 | 1.38 | 1.61 | 72.84 |
| 60 | 486.8 | 188.5 | 1.38 | 1.51 | 61.27 |
| 90 | 363.6 | 162.2 | 1.47 | 1.65 | 55.39 |
| 120 | 335.7 | 123.6 | 1.82 | 1.87 | 63.17 |