Abstract: The present invention discloses a process control system user interface. The user interface is useful for coupling a bioreactor to a process control system for controlling the environmental conditions of a cell culture within the bioreactor. The user interface includes one or more process control option selections, which, upon selection by the user, configure the process control system to a preset control algorithm profile in the process control system. The user interface presents the process control option selection to the user through a menu. The user interface further includes a selection for establishing one or more process control setpoints and a response control algorithm profile selectable by the user for controlling the system's approach to the setpoint.

Abstract: A quick-change drill chuck adapted for positioning ball elements within a groove circumferentially disposed about the central axis of the adapter portion of the tool. Three ball elements when pressed radially into the groove prevent longitudinal movement of the adapter, the ball elements being forced toward the adapter portion of the tool by a ramp portion formed as an integral part of the inner circumferential surface of the chuck collar member.