Abstract: This disclosure concerns a pipette system with an interchangeable volume counter. Aspects of the pipette body design and external dimensions allow various functional features of the pipette system, and, thus, various interior adjustment part designs and dimensions, to be accommodated in a single pipette body design. A three-digit volume counter, a four-digit volume counter, or an electronic counter can be installed in the same pipette body design.

Abstract: A shaft for a sampling pipette includes a first cylindrical portion, a first annular shoulder, and a second annular shoulder. A first cross section of the first cylindrical portion has a first diameter. The first annular shoulder includes a first transition end adjacent the first cylindrical portion and a second cylindrical portion. A second cross section of the second cylindrical portion has a second diameter. The second annular shoulder includes a second transition end adjacent the first annular shoulder and a third cylindrical portion. A third cross section of the third cylindrical portion has a third diameter. The third diameter is greater than the second diameter which is greater than the first diameter. The second diameter and the third diameter are selected so that a pipette tip contacts the second cylindrical portion and the third cylindrical portion when the pipette tip is mounted on the shaft.

Abstract: A device for use in a multi-channel pipetting system is provided. The device includes a body, a plurality of modules mounted to the body, a plurality of pistons mounted to a piston holder for simultaneous movement of the plurality of pistons in a first direction, and a guidance assembly. Each module includes an orifice connecting to an intake chamber. A piston extends into the intake chamber for movement in the first direction. The guidance assembly includes a first rotating element, a second rotating element, a shaft connecting the first rotating element to the second rotating element, and a first track and a second track extending parallel to the first direction. The shaft extends in a second direction orthogonal to the first direction. The first rotating element is mounted to roll along the first track, and the second rotating element is mounted to roll along the second track simultaneously with the plurality of pistons.

Abstract: A system controls aspiration and dispensation of a liquid in a pipette. The system includes a computing device and the pipette. The computing device includes a pipetting module and a first communication interface. The pipetting module defines an operation to perform at the pipette. The first communication interface sends electronic signals to the pipette, the electronic signals defining the operation to perform at the pipette. The pipette includes a sampling tube, a piston assembly, a piston drive mechanism, a second communication interface, and a microprocessor. The piston assembly mounts to the sampling tube and includes a piston rod that fits within the sampling tube. The piston drive mechanism includes a control rod having a surface that contacts the piston assembly. The piston drive mechanism moves the piston rod of the piston assembly within the sampling tube thereby causing regulation of a liquid in the sampling tube.

Abstract: A multivolume pipette is provided. In an exemplary embodiment, the multivolume pipette includes a pipette body, a piston disposed within the pipette body, a first chamber, a second chamber, and a valve. The first chamber and the second chamber are defined at least in part by an inner wall of the pipette body and the piston. The valve is capable of placing the second chamber in fluid communication with an external environment to provide a first volume range of the multivolume pipette. The valve is also capable of placing the second chamber in fluid communication with the first chamber to provide a second volume range of the multivolume pipette.

Abstract: In a solid phase extraction (SPE) device, once all the columns of the SPE plate are filled with liquid, the needles cooperate with engagement formations on a pusher element for pushing down the plate together with an upwardly biased shoe into sealing engagement with a peripheral spacer surrounding a container. Simultaneously, vacuum is applied by appropriate control of a valve and all the columns simultaneously transfer liquid into the drain container. Then, vacuum is released, needles engage recesses to move a carriage above a collect container and a similar prosecution is resumed.

Abstract: A device and method are provided for correcting a requested volume of liquid to aspirate/dispense by a liquid-handling pipette based on the requested volume and/or a physical condition at the pipene. The pipette includes a piston drive mechanism configured to contact a piston assembly and move a piston rod of the piston assembly within a tip holder thereby causing regulation of an amount of liquid in the tip holder. The method includes selecting a requested volume at a pipette, the requested volume representing the amount of liquid to regulate, calculating a correction volume using a volume characterization, wherein the volume characterization characterizes a difference in the amount of the liquid regulated in the tip holder as a function of the requested volume, and displaying the correction volume to a user of the pipette thereby regulating the requested volume of liquid in the tip holder. The volume characterization is determined using a calibration process.

Abstract: The hand-held pipette comprises at least one track having increments, at least one brush, and a register area arranged to come into contact with each brush after it has traveled a predetermined number of increments.

Abstract: The sampling pipette includes an ejector arm for separating from the pipette a cone that is fixed to the pipette. The pipette includes adjustment means enabling the length of the arm to be varied continuously over a range of values.

Abstract: In a solid phase extraction (SPE) device, once all the columns 31 of the SPE plate 29 are filled with liquid (81), the needles (47) cooperate with engagement formations (49) on a pusher element (24) for pushing down the plate (29) together with an upwardly biased shoe (23) into sealing engagement with a peripheral spacer (13) surrounding a container (11). Simultaneously, vacuum (78) is applied by appropriate control of a valve (76) and all the columns simultaneously transfer liquid into the drain container. Then, vacuum is released, needles (47) engage recesses (51) to move a carriage (20) above a collect container (12) and a similar prosecution is resumed.

Abstract: The sampling pipette comprises a body and an arm movable relative to the body to eject a cone fixed to the pipette, ejection taking place in a longitudinal direction of the pipette, the arm having both a first portion suitable for coming into contact with the cone, and a second portion. The two portions are engaged one in the other and, starting from an operating position, they enable the first portion to be separated from the body by means of an initial movement in a direction that is essentially perpendicular to the longitudinal direction.

Abstract: The sampling pipette comprises a body; an arm movable relative to the body parallel to a longitudinal direction of the pipette in order to eject a cone fixed to the body; and a button for controlling movement of the arm. The pipette is arranged in such a manner that the button applies sliding thrust on the arm while the arm is moving relative to the body.

Abstract: The sampling pipette includes means for adjusting the volume of liquid to be taken. It includes a locking element that is movable between an inactive position in which it makes the adjustment means unsuitable for performing adjustment and an active position in which it makes the adjustment means suitable for performing adjustment.

Abstract: Pipette tip container comprises a base for setting a tray (19) with tips (21) and a cover being a tray feeder (2), wherein two opposite elastic side walls of the feeder (2) have on their inner side wedge-shaped projections (31, 32) for the tray (19) with tips (21).

Abstract: The invention concerns a pipette comprising a body, an arm mobile relative to the body along a longitudinal direction to eject a tip fixed to the body and a push button controlling the movement of the arm. The pipette is designed such that the push button is mobile relative to the body in a plane perpendicular to the longitudinal direction by being able to take up any one particular position in a continuous range of positions in said plane and enabling to control the movement of the arm in said any particular position.