Abstract: An in-situ microscope device for reactors, especially bioreactors, having an immersion tube in a reactor connecting port, which, inside the reactor, has an inlet for a sample area, also a microscope outer tube, which is coaxially placed inside the immersion tube and which, on the inner end with the objective, is directed toward the sample area that is located between an objective cover glass and an object support glass body arranged opposite the same. The exterior of the microscope outer tube is connected to a camera for recording the image of the sample area. Also included is a rinsing chamber having closeable openings, through which cleaning agents can be introduced, is connected to the exterior of the reactor connecting port, and that the immersion tube can move in an axial direction inside the connecting port and can be retracted until the inlet is in contact with the rinsing chamber in order to enable a cleaning of the sample area.

Abstract: The invention relates to an in-situ microscope device for reactors, in particular bioreactors, with a dip tube in a reactor connection port which in the inside of the reactor has an inlet for a specimen zone, and with a microscope external tube, arranged coaxially in the dip tube, which at the inner end is directed with a lens towards the specimen zone which lies between a lens cover glass and a slide glass body lying opposite, and is coupled outside with a camera for photographing the image of the specimen zone, the lens cover glass and the slide glass body being movable relative to each other, in order to be able to open and close the specimen zone.