Multi rack systems have solvent columns and material columns on separate racks. This allows the solvent rack to remain stationary while in use, refrigerating solvent, meanwhile the material rack may be moved to be emptied and reloaded more conveniently. Because the material rack is mobile, a single system with two or more material racks can be swapped out for extremely efficient back-to-back runs that lack the down-time usually caused when material columns are unloaded and unpacked for the next run.
Larger systems incorporate ASME ground tanks and material columns for larger throughput. These larger vessels require a chiller to cool their jackets instead of liquid CO₂.
This leads to the next generation of extraction: industrial scale batch size and continuous feed extraction. This incorporates multiple phases of extracting biomass, including liquid-solid separation, winterization, solvent recovery, and distillation.