A method and device for dispensing a liquid from a tip includes a support structure, a cartridge, and a drive unit. The support structure is adapted for supporting a collapsible container having a connector end and a closed end. The support structure includes a liquid passage adapted for fluid communication with the collapsible container for selectively discharging the liquid. The cartridge includes an actuator selectively movable from a first position to the second position via the operatively connected drive unit. At least a portion of the actuator moves toward the connector end when moving from the first position to the second position. The actuator is adapted for gradually compressing the collapsible container from the closed end toward the connector end in order to discharge liquid droplets.
