All the CerCell SUB and SUF and SUM products presented on CerCell website require some sort of rotating device for mixing and agitation purposes. This by loosing power, kinetic energy into the fluid. A huge range of servo motors are used and arranged schematically on CerCell's website for your information. The number of servo motor adaptors are dominated, not surprising, by the Biostat brand and the Applikon brand.
CerCell sister company www.cronus-pcs.com offer a range of supporting drive unit, thermal control unit, measuring unit and both peristaltic and diaphragm pumping units. If you want to control an advanced mixer the traditional PCS is by far not optimum - then look up the product names: Perseus, Harmonia, Sipylus, Otrera, Ares, Clotho on www.cronus-pcs.com.