The CellTrol II control module monitors bioreactors 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 modification 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. Cell-Soft Software are also available. Optional tethered speed drive, optional single support flow station and weight platforms are sold separately.. MADE IN THE USA