The working volumes and turn-down ratios of the bioreactors are:
| Specifications | XDR-50 | XDR-200 | XDR-500 | XDR-1000 | XDR-2000 |
| Minimum working volume (L) | 25 | 40 | 100 | 200 | 400 |
| Maximum working volume (L) | 50 | 200 | 500 | 1000 | 2000 |
| Volume turn-down ratio | 2:1 | 5:1 | 5:1 | 5:1 | 5:1 |