Device and procedure for the electrically triggered microdrop release with a dispensing head

A multi-channel dispensing head comprising:

• a plurality of micropipettes, each micropipette having an electrically actuatable trigger device with a ground and signal terminal;
• and a shared carrier having a plurality of receptacles located in a one- or two-dimensional arrangement and sized and shaped to receive said micropipettes, the shared carrier having a plurality of ground and a plurality of signal contacts, a ground and signal contact being located at each receptacle, wherein the plurality of ground and plurality of signal contacts on the carrier are spaced apart in the direction of a longitudinal axis extending respective micropipettes and each of the plurality of ground and plurality of signal contacts on the carrier contacting each of said ground and signal terminals of the trigger devices, respectively.