Abstract: System, method, and computer program product for synchronizing a system for aspirating and/or dispensing of liquid samples that includes a microejection device and a pump, which are connected with one another via tubing, wherein a computer is capable of being loaded with an activatable computer program product for synchronizing operation of the microejection device and the pump. Embodiments are characterized in that the loaded and activated computer program product, directs the computer to control and synchronize the system: (a) to actively define a sample volume and dispense the defined sample volume using the microejection device, which is filled with sample liquid; and (b) to track a part of the pump that conveys liquid around a value, dependent on the sample volume, which is defined and is actively dispensed only by the microejection device, to prevent excessive pressure differences in the microejection device, tubing, and pump.

Abstract: A computer (4), a computer program product, and a method for synchronizing a system for aspirating and/or dispensing liquid samples that comprises a microejection device (1) and a pump (2) which are connected with one another by tubing (3), wherein the computer (4) is capable of being implemented for loading an activatable computer program product for synchronizing the microejection device (1) and pump (2).

Abstract: A device for automated pipetting of small volumes of liquid has a pipetting needle, a diluter having a liquid output with a syringe and a valve, the syringe including a piston and a piston drive. Tubing interconnects the needle and the liquid output of the diluter, the tubing and diluter containing a substantially incompressible liquid. An impulse generator is connected in the device and coupled to the incompressible liquid in the tubing for generating and applying directly to the liquid in the tubing a mechanical impulse force of at least 0.01 N.multidot.s for separating liquid from the needle.