The Celltrol II Control Module monitors bioreactor process values and performs PLC (Allen-Bradley Programmable logic Controller) based process control. A touch screen operator interface provides access to all PLC based control functions and allows viewing and mdification of control parameters. Signals types include Temperature, pH, DO, speed and foam/level. PLC control drives the Inc/Dec outlets assigned to each channel as well as to pumps mounted on the front of the unit. The pump assignments are user defined from the operator interface. CellSoft software are also available. Optioanl tethered speed drive, optional single support flow station and weight platforms are sold separately.