Abstract: A method for detecting analytes in a sample liquid is provided in which the sample liquid is subjected to a mixing treatment on a surface of a support having in particular immobilized reactants, wherein an in particular trough-like vessel with an essentially flat bottom as a support surface for the immobilized reactants is used as the vessel for the sample liquid. The sample liquid is moved relative to the immobilized reactants by an oscillating movement of the vessel during the mixing treatment in one direction, typically along a line or a curve. In addition, a device is provided for carrying out the method according to the present disclosure.

Abstract: The invention relates to a system for mixing a liquid with another liquid or a solid material by blowing a gas onto the surface of the liquid. The invention further relates to a system for implementing said method. Gas is blown onto the surface of the liquid from a distance which can be adjusted by determining the level of the liquid. A system of the invention, hence, comprises a device for blowing a gas onto the surface of a liquid and a device for detecting the level of a liquid.

Abstract: Liquid transfer device for an analysis unit with a capacitive liquid level detector (10) for detecting the dipping of a liquid transfer needle (5) into an analysis liquid (4). More reliable operation, in particular a better ratio between useful signal and noise signals, is achieved by the fact that the liquid transfer needle (5) is part of a coaxial electrode arrangement (11). The coaxial electrode arrangement includes, in addition to the liquid transfer needle (5), at least one coaxial electrode (12, 13) surrounding the needle and insulating from it and a detection circuit (17). This detection circuit detects a change in capacitance between the electrodes (5, 13) of the liquid level detector (10), and includes an isolation amplifier circuit (23) to whose input (23a) and output (23b) two adjacent electrodes (5, 12) of the coaxial electrode arrangement (11) are connected as signal electrode and compensating electrode.