Abstract: A pipetting device includes a pipetting channel at least partially filled with working gas, a pipetting tip accessible through a pipetting opening such that the volume of dosing liquid drawn into the receiving chamber can be varied by changing the pressure of the working gas in the receiving chamber, a pipetting piston for changing the pressure of the working gas and accommodated in the pipetting channel to be movable along the pipetting channel, a drive driving the pipetting piston to perform a movement along the pipetting channel, a control device controlling the drive, and a pressure sensor sensing the pressure of the working gas. The control device controls the drive to generate a pressure pulse in the pipetting channel based on the pressure signal output by the pressure sensor whereby the pressure of the working gas during the pulse follows a predefined working gas target pressure pulse curve.

Abstract: A pipetting device includes pipetting unit(s), a guide assembly with at least one guide rail on which the pipetting unit(s) is guided in order to be moved along a movement axis, and a linear drive assembly, by which the pipetting unit(s) can be driven in order to be moved along the movement axis. The linear drive device has a stationary stator, and the at least one pipetting unit forms a linear drive assembly rotor which can be moved along the movement axis relative to the stator. The pipetting device also has at least two rotor magnet assemblies which interact with the same common stator magnet assembly so as to generate a drive force and which are arranged at a distance from one another along a spacing axis that is orthogonal to the movement axis. The common stator magnet assembly is located between the at least two rotor magnet assemblies.

Abstract: A pipetting apparatus and method for pulsed dispensing of small metered-liquid doses of no more than 1 ?l. The apparatus includes a pipetting conduit at least partly filled with working gas, a pressure-modifying apparatus for modifying the pressure of the working gas, and a control apparatus for applying control to the pressure-modifying apparatus. The control apparatus can control the pressure-modifying apparatus so as to generate in the pipetting conduit, with respect to a reference holding pressure in the pipetting conduit which is necessary for immovable holding of the metered-liquid quantity, an overpressure pulse having a pulse duration of no more than 40 ms.

Abstract: A magnetic isolating apparatus (10) for isolating magnetic particles (66) from a suspension has an immersion section (30) which is designed to be temporarily immersed in the suspension, a guide apparatus (16) which extends along a guide path (F), a magnet arrangement (18) which is guided by the guide apparatus (16) such that it can be moved between an active position which is situated close to the immersion section (30) and an inactive position which is positioned further away from the immersion section (30) along the guide path (F), so that a magnetic field in the region of the immersion section (30) can be changed by moving the magnet arrangement (18) between the active position and the inactive position, and a drive apparatus (22, 50) by which the magnet arrangement (18) can be driven to move at least in a direction between the active position and the inactive position, wherein the drive apparatus (22, 50) is coupled in a non-physical manner to the magnet arrangement (18) by a force field and/or a fluid so

Abstract: A pipetting device includes a pipetting channel at least partially filled with working gas, a pipetting tip which is accessible through a pipetting opening such that the volume of dosing liquid drawn into the receiving chamber through the pipetting opening can be varied by changing the pressure of the working gas in the receiving chamber, a pipetting piston for changing the pressure of the working gas and accommodated in the pipetting channel so as to be movable along the pipetting channel, a drive for driving the pipetting piston to perform a movement along the pipetting channel, a control device for controlling the drive, and a pressure sensor for sensing the pressure of the working gas. The control device controls the drive to generate a pressure pulse in the pipetting channel based on the pressure signal output by the pressure sensor such that the pressure of the working gas during the pulse follows a predefined working gas target pressure pulse curve.

Abstract: A pipetting device includes pipetting unit(s), a guide assembly with at least one guide rail on which the pipetting unit(s) is guided in order to be moved along a movement axis, and a linear drive assembly, by which the pipetting unit(s) can be driven in order to be moved along the movement axis. The linear drive device has a stationary stator, and the at least one pipetting unit forms a linear drive assembly rotor which can be moved along the movement axis relative to the stator. The pipetting device also has at least two rotor magnet assemblies which interact with the same common stator magnet assembly so as to generate a drive force and which are arranged at a distance from one another along a spacing axis that is orthogonal to the movement axis. The common stator magnet assembly is located between the at least two rotor magnet assemblies.

Abstract: A pipetting apparatus (10) having a guidance frame (12) having a first linear guidance rail (52) and having a second linear guidance rail (56), the first and the second linear guidance rail (52, 56) proceeding parallel to one another along a displacement axis (VL) and being provided at a distance from one another orthogonally to the displacement axis (VL), and having a pipetting channel (14) which extends along a channel axis (K14) that is nonparallel, preferably orthogonal, to the displacement axis (VL) and which is guided displaceably along the displacement axis (VL) with a first bearing component (54) on the first linear guidance rail (52) and with a second bearing component (58) on the second linear guidance rail (56), is characterized in that the first and the second bearing component (54, 58) are arranged with a spacing (A) from one another along the displacement axis (VL).

Abstract: An integrated motor cartridge (2) for connection to and for use in a pipetting system comprises a housing (4); a guide tube (14); a piston (16) provided with a plurality of permanent magnets (18), the piston having a pressure tube facing side and a pressure tube distal side, the piston being arranged in the guide tube and the piston having at least one seal (24) with respect to the guide tube; and a coil assembly (20) by means of which the piston can be moved in the guide tube when power is supplied to the coil assembly; wherein the guide tube, the piston and the coil assembly are arranged in the housing.

Abstract: A pipetting device includes pipetting unit(s), a guide assembly with at least one guide rail on which the pipetting unit(s) is guided in order to be moved along a movement axis, and a linear drive assembly, by which the pipetting unit(s) can be driven in order to be moved along the movement axis. The linear drive device has a stationary stator, and the at least one pipetting unit forms a linear drive assembly rotor which can be moved along the movement axis relative to the stator. The pipetting device also has at least two rotor magnet assemblies which interact with the same common stator magnet assembly so as to generate a drive force and which are arranged at a distance from one another along a spacing axis that is orthogonal to the movement axis. The common stator magnet assembly is located between the at least two rotor magnet assemblies.

Abstract: The present invention relates to a pipetting apparatus for aspirating and dispensing metered liquids, encompassing: at least one guidance tube (30) extending along a cylinder axis (Z), the cylinder axis (Z) defining: an axial direction proceeding along its direction of extent; a radial direction proceeding orthogonally thereto; and a circumferential direction extending therearound; a piston (10) received in the guidance tube (30) axially movably relative thereto; a coupling configuration embodied for temporary or permanent coupling of a pipetting tip; and a drive apparatus (32) for driving the piston (10) to move axially relative to the guidance tube (30), the guidance tube (30) comprising a coupling-side longitudinal end (48) that is located closer to the coupling configuration; and comprising a servicing-side longitudinal end (50) that is located oppositely from the coupling-side longitudinal end (48) and is located farther from the coupling configuration; the piston (10) encompassing at least one pe

Abstract: A pipetting apparatus (10) having a guidance frame (12) having a first linear guidance rail (52) and having a second linear guidance rail (56), the first and the second linear guidance rail (52, 56) proceeding parallel to one another along a displacement axis (VL) and being provided at a distance from one another orthogonally to the displacement axis (VL), and having a pipetting channel (14) which extends along a channel axis (K14) that is nonparallel, preferably orthogonal, to the displacement axis (VL) and which is guided displaceably along the displacement axis (VL) with a first bearing component (54) on the first linear guidance rail (52) and with a second bearing component (58) on the second linear guidance rail (56), is characterized in that the first and the second bearing component (54, 58) are arranged with a spacing (A) from one another along the displacement axis (VL).

Abstract: A magnetic isolating apparatus (10) for isolating magnetic particles (66) from a suspension has an immersion section (30) which is designed to be temporarily immersed in the suspension, a guide apparatus (16) which extends along a guide path (F), a magnet arrangement (18) which is guided by the guide apparatus (16) such that it can be moved between an active position which is situated close to the immersion section (30) and an inactive position which is positioned further away from the immersion section (30) along the guide path (F), so that a magnetic field in the region of the immersion section (30) can be changed by moving the magnet arrangement (18) between the active position and the inactive position, and a drive apparatus (22, 50) by which the magnet arrangement (18) can be driven to move at least in a direction between the active position and the inactive position, wherein the drive apparatus (22, 50) is coupled in a non-physical manner to the magnet arrangement (18) by a force field and/or a fluid so

Abstract: A pipetting device has a pipetting channel extending along a channel path, in which a piston is accommodated to be movable along the channel path to change the pressure of a working gas that wets the piston on a dosing side facing the dosing liquid. The pipetting device includes a movement drive for driving the piston along the channel path and a control unit configured to operate the movement drive for pipetting a predetermined single dosing volume of less than 5 ?l with the piston moving in the pipetting direction and its dosing side end face sweeping over a pipetting volume which is not less than 1.4 times greater than the single dosing volume, and subsequently moving in a counter pipetting direction and its dosing side end face sweeping over a counter pipetting volume, wherein not more than 50 ms elapse between beginning control signals.

Abstract: A pipetting apparatus and method for pulsed dispensing of small metered-liquid doses of no more than 1 ?l. The apparatus includes a pipetting conduit at least partly filled with working gas, a pressure-modifying apparatus for modifying the pressure of the working gas, and a control apparatus for applying control to the pressure-modifying apparatus. The control apparatus can control the pressure-modifying apparatus so as to generate in the pipetting conduit, with respect to a reference holding pressure in the pipetting conduit which is necessary for immovable holding of the metered-liquid quantity, an overpressure pulse having a pulse duration of no more than 40 ms.

Abstract: A pipetting apparatus (10) having a guidance frame (12) having a first linear guidance rail (52) and having a second linear guidance rail (56), the first and the second linear guidance rail (52, 56) proceeding parallel to one another along a displacement axis (VL) and being provided at a distance from one another orthogonally to the displacement axis (VL), and having a pipetting channel (14) which extends along a channel axis (K14) that is nonparallel, preferably orthogonal, to the displacement axis (VL) and which is guided displaceably along the displacement axis (VL) with a first bearing component (54) on the first linear guidance rail (52) and with a second bearing component (58) on the second linear guidance rail (56), is characterized in that the first and the second bearing component (54, 58) are arranged with a spacing (A) from one another along the displacement axis (VL).

Abstract: The present invention relates to a pipetting apparatus for aspirating and dispensing metered liquids, encompassing: at least one guidance tube (30) extending along a cylinder axis (Z), the cylinder axis (Z) defining: an axial direction proceeding along its direction of extent; a radial direction proceeding orthogonally thereto; and a circumferential direction extending therearound; a piston (10) received in the guidance tube (30) axially movably relative thereto; a coupling configuration embodied for temporary or permanent coupling of a pipetting tip; and a drive apparatus (32) for driving the piston (10) to move axially relative to the guidance tube (30), the guidance tube (30) comprising a coupling-side longitudinal end (48) that is located closer to the coupling configuration; and comprising a servicing-side longitudinal end (50) that is located oppositely from the coupling-side longitudinal end (48) and is located farther from the coupling configuration; the piston (10) encompassing at least one pe

Abstract: A scale and related method for a length-measuring system for recording the absolute values of angles or distances. The scale includes a printed circuit board, at least one track for identifying length information or angle information and a coding for identifying the scale. The coding has at least one coding element comprising at least two electrodes and a conductive connection between the electrodes on an insulator substrate. The electrical connection is configured to be irreversibly destroyed when an electrical current is applied.

Abstract: A linear motor, comprises at least one stator device (14) with a plurality of permanent magnets (18, 18-1, 18-2) of different polarity and with at least one carrier rail (24), and at least one rotor device (12) with at least three electrical coils (44) and with at least one supporting means (26), which can be or which is supported on the carrier rail (24) of the stator device (14), wherein the rotor device (12) and the stator device (14) are moveable to and fro with respect to each other along a movement direction (FR) defined by the carrier rail (24) by interaction of magnetic fields of the permanent magnets (18, 18-1, 18-2) with the magnetic fields of the coils (44), through which current flows if required, wherein the stator device (14) is formed from at least one stator module (16-1, 16-2), wherein the stator module (16-1, 16-2) is configured such that a stator device (16) with two or more consecutively arranged stator modules (16-1, 16-2) can be formed, and wherein at the stator module (16-1, 16-2) at le

Abstract: A pipetting device has a pipetting channel extending along a channel path, in which a piston is accommodated to be movable along the channel path to change the pressure of a working gas that wets the piston on a dosing side facing the dosing liquid. The pipetting device includes a movement drive for driving the piston along the channel path and a control unit configured to operate the movement drive for pipetting a predetermined single dosing volume of less than 5 ?l with the piston moving in the pipetting direction and its dosing side end face sweeping over a pipetting volume which is not less than 1.4 times greater than the single dosing volume, and subsequently moving in a counter pipetting direction and its dosing side end face sweeping over a counter pipetting volume, wherein not more than 50 ms elapse between beginning control signals.

Abstract: A scale and related method for a length-measuring system for recording the absolute values of angles or distances. The scale includes a printed circuit board, at least one track for identifying length information or angle information and a coding for identifying the scale. The coding has at least one coding element comprising at least two electrodes and a conductive connection between the electrodes on an insulator substrate. The electrical connection is configured to be irreversibly destroyed when an electrical current is applied.