The piezoelectric micro dosage heads generate micro drops from 50 pL. Due to a variety of different housings the dispenser heads fit well to arbitrary hardware setups. The dedicated control device comes with an application programming interface for integration in any software environment.
The dispensers (also called "pipettes" or "jets") follow the drop-on-demand principle, i.e., a drop is released exactly when the piezo ceramic actuator is triggered. This results in the bending of a silicon diaphragm behind the actuator and this in turn leads to a compression of the liquid inside the “pump chamber” and hence to the ejection of a droplet from the nozzle. After this, the ceramic returns to its initial state and the dispenser is refilled with liquid from the inlet. No valve is involved in this process.
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