Liquid droplet dispenser

A dispensing apparatus for dispensing droplets, the apparatus comprising:

• a dispensing tip having a fluid passage with an orifice, an actuator assembly comprising an actuator element and being arranged to engage with and disengage from the tip, wherein said orifice has a cross sectional area in the range of 0.00002 mm2 to 0.03 mm2, and
• wherein the actuator is adapted to, when engaged, couple acoustic energy to liquid in the fluid passage to eject said liquid through the orifice as a droplet by applying a static mechanical pressure against the tip, said static mechanical pressure being a bias force upon which the actuator applies a pressure wave.

A dispensing tip comprising a liquid-containing body with a lower fluid passage having an external surface for engaging an actuator assembly and an orifice having a cross sectional area in the range of 0.00002 mm2 to 0.03 mm2.