Abstract: The present invention relates to a coupling formation of a pipetting channel of a pipetting device for coupling of an implement, for instance a pipette tip, or a laboratory instrument, laboratory tool or the like, thereto, wherein the coupling formation surrounds a pipetting channel section which extends along a pipetting channel axis which defines an axial direction, wherein the coupling formation additionally has, at its free longitudinal end, a pressure-imparting orifice into which the pipetting channel section opens and has, at its radially outer surface which surrounds the pipetting channel axis and extends principally in axial direction and in peripheral direction about the pipetting channel axis relative to the pipetting channel axis, a coupling projection which yields in the radial direction, which is characterized in that the coupling projection is provided so as to be essentially undeformable but radially movable on a spring arrangement which is elastic in radial direction.

Abstract: A metering apparatus includes a base and a vertical support coupled to the base and extending upwardly from the base. The metering apparatus also includes a transverse support coupled to the vertical support, vertically spaced from the base. The metering apparatus also includes a pipetting device coupled to the transverse support, the pipetting device including at least one pipetting channel configured to attach to a pipetting tip. The metering apparatus also includes a disposal container configured to receive used pipetting tips from the pipetting channel, detachably coupled to the vertical support. The pipetting device is movable in first, second, and third directions substantially orthogonal to each other. The disposal container is moveable in one of the first, second, and third directions.

Abstract: The present invention relates to a coupling formation of a pipetting channel of a pipetting device for coupling of an implement, for instance a pipette tip, or a laboratory instrument, laboratory tool or the like, thereto, wherein the coupling formation surrounds a pipetting channel section which extends along a pipetting channel axis which defines an axial direction, wherein the coupling formation additionally has, at its free longitudinal end, a pressure-imparting orifice into which the pipetting channel section opens and has, at its radially outer surface which surrounds the pipetting channel axis and extends principally in axial direction and in peripheral direction about the pipetting channel axis relative to the pipetting channel axis, a coupling projection which yields in the radial direction, which is characterized in that the coupling projection is provided so as to be essentially undeformable but radially movable on a spring arrangement which is elastic in radial direction.

Abstract: The invention relates to a metering apparatus (10), in particular a pipetting machine, comprising a pipetting device (12) that can be moved in three directions (X, Y, Z) orthogonal to each other and that has at least one pipetting channel (16) to which a pipetting tip (18) is or can be detachably attached in order to aspirate sample liquid from a sample container (34, 36) associated with the metering apparatus (10) or to dispense sample liquid into a sample container (34, 36), wherein the at least one pipetting channel (16) is designed in such a way that a pipetting tip (18) detachably attached to the pipetting channel can be removed from the pipetting channel (16), preferably can be automatically removed, and a disposal container (40), which is arranged on the metering apparatus (10) and in which used pipetting tips (18) can be accommodated after being removed from a relevant pipetting channel (16).