Patent ID: 8802030

Claim:
A capillary dispenser for dispensing a liquid out of at least one capillary comprising: at least one plunger-cylinder unit including a cylinder module defining an axis and having an inner cylinder that is pneumatically connected to at least one capillary, and a plunger module disposed on the axis and including a hollow plunger having open ends at both sides, the plunger being movable in the inner cylinder along the axis between an upper end position and a lower end position of the plunger module, the plunger being closable at one end so as to remain closed over an entire length of a path of travel of the plunger when being moved towards a lower end position so as to compress air present in the plunger-cylinder unit and dispense the liquid by the compressed air, and wherein the plunger module is associated with a plunger seal configured to receive an upper face of the plunger with a positive fit when the plunger module is in the upper end position so as to close the plunger, the plunger having axial play in a direction of the axis inside the plunger module.