Modular pipetting unit, pipetting device, pipetting system and method for pipetting of fluid samples

摘要

The present invention pertains to a pipetting device, comprising at least one modular pipetting unit (2) including a pipetting tip (3) for pipetting of fluid samples and a pump conduit (4) for transferring a negative or positive pressure to said pipetting tip, wherein said pipetting tip and at least a portion of said pump conduit adjoining said pipetting tip mutually define a fluid sample conduit (25) for receiving said fluid samples, and wherein said modular pipetting unit being detachably attached to an automated positioning device for positioning said modular pipetting unit. It further relates to such modular pipetting unit. It yet further relates to a method for pipetting of fluid samples using such pipetting device wherein pipetting of said fluid samples is performed in such that each pipetted fluid sample volume is smaller than a volume of said fluid sample conduit. It yet further relates to a pipetting system, comprising at least one pipetting unit including a pipetting tip for pipetting fluid samples and a pump conduit for transferring a negative or positive pressure to said pipetting tip, wherein said pipetting tip and at least a portion of said pump conduit adjoining said pipetting tip (3) mutually define a fluid sample conduit for receiving said fluid samples; an automated positioning device for positioning of the at least one pipetting unit; and a controller for controlling of pipetting of said fluid samples, configured to control pipetting of fluids such that each pipetted volume of the fluid samples is smaller than a volume of said fluid sample conduit.