Abstract: A microfluidic device includes at least one separation chamber having an inlet and an outlet. The inlet opens into the separation chamber at a lower height than the outlet. In order to separate blood plasma from whole blood, whole blood is introduced into the separation chamber of the microfluidic device, blood cells are sedimented from the whole blood, and blood plasma separated in the process is sublayered using a transport medium which has a higher density than the blood plasma.

Abstract: A flow cell for integrating a processing unit into a microfluidic device has a receiving unit with a depression The processing unit is/can be arranged in the depression. The flow cell also has a cover unit for covering the depression and at least one capillary gap for receiving a fluid, wherein the capillary gap is formed between an edge region of the cover unit and the receiving unit and, additionally or alternatively, between the cover unit and the processing unit.

Abstract: A system for transferring a sample into a microfluidic system, including a sample loading chamber, wherein a first sub-volume of the sample loading chamber is separated from at least one second sub-volume of the sample loading chamber by a filter module. The first sub-volume forms a pressure chamber provided for the loading of the sample, and there is at least one second sub-volume for providing the microfluidic system with the sample.

Abstract: A centrifuge unit for a microfluidic device for processing liquid samples includes a centrifuge cup and at least one centripetal force-dependent valve function.

Abstract: A microfluidic device is for processing and aliquoting a sample liquid. The microfluidic device has a dividing chamber for receiving a starting volume of the sample liquid. The dividing chamber has a plurality of cavities for receiving sub-volumes of the sample liquid, the sub-volumes being usable for analytical reactions. The microfluidic device also has a microfluidic network for using the dividing chamber in a fluid-mechanical manner and at least one pump device for pumping fluids within the device. The at least one pump device and the microfluidic network are configured to pump the sample liquid, as a first phase, and a sealing liquid, as a second phase, through the microfluidic network and into the dividing chamber in order to seal the sub-volumes of the sample liquid in the cavities using the sealing liquid.