Abstract: A back cover assembly for a device having an ambient light source is provided. The back cover assembly comprises a back cover which comprises an opening for allowing light emitted from the ambient light source to propagate therethrough and a reflective surface for deflecting light emitted from the ambient light source.

Abstract: The invention relates to a device for controlling the amount of liquid substances received and discharged. It is an object of the invention to produce a device, enabling a plurality of different liquid substances to be received and discharged from micro or nano titer plates. According to the invention, it is possible to carry out one or more chemical or biological reactions in said device and to receive liquid substances with differing viscosity, as a result of capillary channels which are arranged at an equal distance from each other and are provided in a row, said channels being brought together in a communicative link with a chamber which is can be impinged upon by overpressure and underpressure, whereby the capillary channels are embedded in the plate and one sieve-type membrane is associated with the ends of the capillary channels at least on the inner side of the pressure chamber. According to the invention, an area is provided above each end of the capillary channels for receiving a liquid substance.

Abstract: The invention relates to a microdosing device for the defined delivery of small self-contained liquid volumes. The aim of the invention is to provide a cost-effective microdosing device (m) which enables a defined delivery of small self-contained liquid volumes with liquid volumes that can be freely selected from part by volume to part by volume in a relatively large range without, as a result, influencing the dwell time of the dispenser that moves in relation to the settling area. To this end, the invention provides that a supporting body (1) comprises at least one first channel (2) which is connected to a pressurization means (d) that permits the channel (2) to be pressurized with a variably predeterminable pneumatic pressure pulse.