Abstract: A configuration of mini-volume reaction receptacles (1, 16, 41) of which the housings (2, 17) each enclose an elongated chamber (3, 18, 42) of which the ends are connected to apertures (6, 7, 20, 22) of the particular housing, said housings exhibiting the same base surfaces and being of low height compared to the base surface and are stacked one on another while their base surfaces are mutually aligned, at least one aperture of a receptacle communicating with at least one aperture of a consecutive receptacle as seen in the direction of stacking, said configuration being characterized in that the receptacles (1, 16, 41) are mechanically interlocked in the direction transverse to the direction of stacking and can be plugged one into another, and each receptacle comprises at least one aperture (6, 7, 22) accessible to a pipette at its top side.

Abstract: A microfluidic accumulating and proportioning component, including:

Abstract: A system for detecting fluids in a microfluidic component having at least one microchannel including a limitation wall which has two surfaces which, facing the microchannel in a transparent area, are inclined towards each other at an acute angle, with the system further including a photo transmitter and a photo receiver which are disposed outside the component and are directed to the inclined surfaces in the transparent area of the limitation wall in such a way that if a gas is waiting in the microchannel on the two surfaces, a light ray emitted by the photo transmitter impinges on the photo receiver following a total reflection on the two surfaces and, if a liquid is waiting in the microchannel, the light ray enters the microchannel on at least one of the two surfaces and, as a result, the incidence of light into the photo receiver is reduced or prohibited.