Abstract: A measurement system for measuring the CO2 concentration in an environmental chamber or in an incubator has a radiation source with an optical axis and at least two radiation detectors. The radiation source and the radiation detectors are arranged such with respect to one another that the radiation emitted by the radiation source impinges, after passing through a measurement volume, on the radiation detectors. In each case one channel having a first end and a second end is provided for each radiation detector. The radiation detector is arranged at the first end and the first end of the channel is remote from the radiation source. The channels have a diameter which is smaller than the diameter of the measurement volume, transverse to the optical axis.

Abstract: An apparatus for opening a door of a climatic test cabinet, an incubator, an environmental simulation chamber or a freezer is suitable for unlocking the door when the door is closed and locked and for transferring it to an open position. The force for opening the door need no longer be applied by the user himself operating lever mechanisms and transferring the door to an open position, but instead the force for opening the door may be applied by the apparatus.

Abstract: An apparatus for opening a door of a climatic test cabinet, an incubator, an environmental simulation chamber or a freezer is suitable for unlocking the door when the door is closed and locked and for transferring it to an open position. The force for opening the door need no longer be applied by the user himself operating lever mechanisms and transferring the door to an open position, but instead the force for opening the door may be applied by the apparatus.

Abstract: An incubator with an external gas feed is disclosed, wherein a gas is supplied to an interior space of the incubator to maintain an interior atmosphere with a constant gas-to-air ratio. The gas is supplied to the interior space through a gas nozzle forming a gas jet. The gas jet draws in the interior atmosphere through an injector effect, thereby thoroughly mixing the gas with the interior atmosphere.

Abstract: A door for a high-temperature oven is disclosed that includes an external door and an internal door which are thermally isolated from one another. The internal door is held at a distance in a frame of the external door by internal door carriers. The internal door carriers are in the form of lugs that are integrally formed on the internal door by punching out the metal sheet. The lugs engage with tabs in the form of punched-out recessed that are disposed on the frame of the external door.

Abstract: An aeration incubator achieves a high atmospheric humidity in the interior working space of the incubator by placing a heated water tub in the working space. In order to avoid condensation on the walls of the incubator tank, a condensate tub is also placed in the working space. The condensate tub is maintained at a temperature which is slightly lower than the temperature of the working space. The condensate tub produces a defined coldest location in the working space, so that condensation occurs primarily in the condensate tub.