Abstract: The invention relates to a dispensing device having a dispenser for dispensing a liquid containing at least one cell and/or at least one particle and an optical detection device for optically detecting at least a region of the dispenser, which has a light source for emitting an illuminating light for illuminating the region and a deflection device for deflecting a detection light emanating from the region. The dispensing device is characterised in that the deflection device deflects the detection light at least twice, in particular exactly twice.

Abstract: A apparatus for detecting cells or particles in a fluid container includes a dispenser configured to dispense at least one cell or at least one particle into a defined sub-volume of a fluid with which the fluid container is at least partially filled, and a detection apparatus configured to, in a time-coordinated manner with dispensing the at least one cell or the at least one particle by the dispenser, perform a detection in the defined sub-volume and/or in one or several sub-volumes underneath the defined sub-volume in order to sense the at least one cell or the at least one particle when entering the fluid or immediately after entering the fluid.

Abstract: The invention relates to a method for examining a liquid which contains at least one cell and/or at least one particle using a first and a second measurement signal emanating from a liquid region, wherein the method has the following steps: (a) reading the first measurement signal and analysing the first measurement signal; and (b) determining based on the analysed first measurement signal (15) whether a detection of the second measurement signal (20) is carried out and a reading of the detected second measurement signal is completed, or whether a reading of the detected second measurement signal (20) is completed, or whether a reading of the detected second measurement signal (20) is interrupted.

Abstract: A apparatus for detecting cells or particles in a fluid container includes a dispenser configured to dispense at least one cell or at least one particle into a defined sub-volume of a fluid with which the fluid container is at least partially filled, and a detection apparatus configured to, in a time-coordinated manner with dispensing the at least one cell or the at least one particle by the dispenser, perform a detection in the defined sub-volume and/or in one or several sub-volumes underneath the defined sub-volume in order to sense the at least one cell or the at least one particle when entering the fluid or immediately after entering the fluid.

Abstract: An apparatus for dispensing particles in free-flying liquid drops includes a fluid chamber fluidically coupled to a nozzle, a sound source configured to generate, in the fluid chamber, an acoustic field by which particles in a liquid in the fluid chamber may be aligned in an arrangement, and a drop-on-demand mechanism configured to, at a selected point in time, selectively dispense from the nozzle an individual liquid drop containing one or several particles.