In a container of a cell culture device, a light source and a camera are arranged on both sides of an incubator, and the camera or incubator can be moved in relation to each other. The turbine wheel shell receives a connection element with which it acts on the torsional vibration damper. The first and second pistons each preferably include a sealing head which seats in a tapered frusto-conical shaped seat for positively sealing the vacuum inlet and the vent port in the operation of the valve. The system then determines die-size changes between the initial die-size and the target die-size. Wobbling movement provides a somewhat more concentrated spray than that provided when the nozzle only spins.