The Minitrons drive is unique due to the magnetic coupling and the hermetic separation of the motor from the incubation chamber. This is fundamentally different to conventional shakers. The floor of the incubation chamber is free of both bearings and eccentrics. By virtue of the excellent sealing of the magnetic drive and electronics, flask breakage or spillage are much easier to deal with. The bottom of the chamber is easy to clean and can even be rinsed with water. Additional protection for the culture is provided by an overheating cut-off switch and an alarm output from the interface as well as an automatic restart after a power failure.