| Experimental Parameters | Tank 1 (1 axial impeller) | Tank 2 (2 axial impeller) | Tank 3 (2 radial impeller) | Tank 4 (no impeller) |
| Tank height (cm) | 61.0 | 61.0 | 61.0 | 61.0 |
| Free board height (cm) | 10.0 | 10.0 | 10.0 | 10.0 |
| Tank diameter (cm) | 38.2 | 38.2 | 38.2 | 38.2 |
| Material volume (lit) | 58.4 | 58.4 | 58.4 | 58.4 |
| Flow rate (lit/min) | 10 | 10 | 10 | 10 |
| Theoretical MRT (min) | 5.8 | 5.8 | 5.8 | 5.8 |
| Exp. MRT per tank (min) | 5.3 | 7.5 | 7.1 | 5.1 |
| Exp. Variance per tank, σ2 (min2) | 42.4 | 86.3 | 57.7 | 26.6 |