Abstract: A pipette with an adjustable dosing increment, wherein a control apparatus determines a dosing volume by a set dosing increment when a syringe is inserted in the pipette, and determines a maximum possible number of dosing steps following an execution of a reverse stroke without refilling the syringe given the set dosing increment and completely or partially filled syringe by the position of a displacement means on the path, and displays the maximum number of dosing steps on a display apparatus until the reverse stroke is executed. The control apparatus also determines the number of executed dosing steps and displays the number of executed dosing steps and/or the number of dosing steps still possible without refilling the syringe on the display apparatus.

Abstract: A pipette comprises a pipette housing, a neck configured to clamp on a pipette tip, and a drive apparatus. The drive apparatus comprises a drive element configured to displace a displacement element to draw a liquid sample into the pipette tip and to eject the liquid sample from the pipette tip. A scanning apparatus comprises a scanning element positioned proximate the neck and configured to be displaced relative to the pipette housing by a collar of the pipette tip when clamping the pipette tip onto the neck. A mechanical display apparatus is coupled to the scanning apparatus and comprises a display. When the pipette tip is clamped to the neck the scanning apparatus is configured to adjust the display depending on a height of the collar of the pipette tip relative to the neck, and the neck is configured to accommodate different collar heights.

Abstract: A pipette for use with a pipette tip includes a chassis. An apparatus is coupled to the chassis and is configured to detachably hold at least one pipette tip. A drive apparatus is coupled to the chassis and is configured to displace a displacement element to suck liquid specimens into the pipette tip and eject the specimens from the pipette tip. A tubular pipette housing is configured to surround and connect to the chassis. The longitudinal direction of the chassis is aligned in the longitudinal direction of the pipette housing. The chassis includes multiple chassis elements which are arranged behind one another and are connected to one another. The apparatus for detachably holding at least one pipette tip and the drive apparatus are connected to one or more of the multiple chassis elements.

Abstract: A pipette for use with a pipette tip includes a housing, a pin on the bottom end of the housing holding a pipette tip having first means for form-fit connection and a second means for form-fit connection which can be shoved onto the pin, constricting the pin, and/or expanding the tip before form-fit connection with the pin, a drive apparatus, at least one locking sleeve arranged concentric to the pin which is guided toward the pin in the housing, wherein the locking sleeve has a locked position having a pin in the inside constricted by shoving on a pipette tip, and/or is bordered on the outside by a tip shoved onto the pin, preventing a release from the pin, and the locking sleeve is upwardly displaceable out of the locked position so that the pin, and/or the tip is released, and the tip is removable from the pin.

Abstract: A spindle drive comprising a threaded spindle with an external thread, a spindle nut with an internal thread that is in engagement with the external thread of the threaded spindle, characterized in that the external thread of the threaded spindle has multiple threaded areas that are separated from each other by first flattenings on their circumference extending in the longitudinal direction, and the first flattenings have guide areas that abut the core diameter of the internal thread of the spindle nut.

Abstract: A pipette comprises a housing extending from a lower end to an upper end and a neck extending from the lower end of the housing and configured to hold a pipette tip. A stroke rod comprising an upper end and a lower end is configured to displace a tip plunger in the pipette tip. A drive apparatus is configured to displace the stroke rod to: (1) aspirate a liquid specimen into the pipette tip held on the neck; and (2) to eject the specimen from the pipette tip by means of a tip plunger positively connected to the stroke rod. At least one locking sleeve is arranged coaxially with the stroke rod and configured to be displaceably guided toward the stroke rod in the housing, The locking sleeve is configured to inhibit release of a tip plunger from the stroke rod.

Abstract: A method for dosing liquid by using a pipette and a syringe, including releasably connecting the syringe to the pipette. Then displaying the dosing volume corresponding to a set dosing increment by using a display apparatus. Next, sucking liquid into the syringe by actuating a drawing lever. Next, detecting a respective position of a drive element along its path of movement when the drive element is shifted along the path. Finally, determining and displaying by the display apparatus a possible maximum number of dosing steps with the set dosing increment without refilling the syringe after executing a reverse stroke starting from a position of the drive element reached at the end of filling.

Abstract: A multichannel syringe for use with a metering device having a barrel holding apparatus of a syringe barrel and an axially movable holding apparatus of a syringe plunger 5 comprising: a plunger unit having a drive rod comprising the plunger holding apparatus, a crossmember on the lower end of the drive rod, and a plurality of syringe plungers projecting downward and parallel to the drive rod, a barrel unit comprising a support and rows of syringe barrels arranged in a parallel 10 manner, protruding downwards from the support, and having lower and upper syringe openings, and a running region, wherein each syringe plunger engages a syringe barrel through, an upper syringe opening and is sealingly guided in the running region, and the barrel holding apparatus is above the syringe barrel and is connected to the support.

Abstract: A method for dosing a liquid using a pipette with adjustable dosing step size and an indicating equipment and a syringe that can be operated using the pipette, wherein the syringe is detachably connected to the pipette, at option, the dosing step size is set, or the dosing step size set before is maintained, the dosing volume adjusted via the dosing step size is indicated by means of the indicating equipment, the maximum number of dosing steps possible without refilling the syringe, with the set dosing step size and completely filled syringe is indicated by means of the indicating equipment, liquid is aspirated into the syringe, a reverse stroke is performed after the syringe is filled with liquid, dosing steps are performed, the performed dosing steps are counted and the number of performed dosing steps and/or the number of dosing steps still possible without refilling the syringe is determined and indicated by means of the indicating equipment, after performing the maximum number of dosing steps possible wi

Abstract: A pipette with an adjustable dosing increment, a display apparatus, a drawing lever to draw liquid into a syringe, and a control button to discharge liquid in steps from the syringe, and the syringe actuated by means of the pipette, wherein the syringe is releasably connected to the pipette, the dosing increment is optionally set, or the previously set dosing increment is retained, the dosing volume set by the dosing increment is displayed by means of the display apparatus, liquid is sucked into the syringe by actuating the drawing lever, the respective position of a drive element of a drive mechanism of the pipette for filling and draining the syringe when the drive element is shifted along a path is detected, the possible maximum number of dosing steps with the set dosing increment without refilling the syringe after executing the reverse stroke starting from the position of the drive element reached at the end of filling is determined and displayed by means of the display apparatus, after the syringe is co

Abstract: The invention relates to a measuring apparatus for detecting the relative position of an end portion of a pipetting container by an interaction between a measurement support section of the pipetting container and the measuring apparatus. The invention relates to an automatic laboratory, which comprises this measuring apparatus and to a corresponding measuring method.

Abstract: A multichannel syringe for use with a metering device having a barrel holding apparatus of a syringe barrel and an axially movable holding apparatus of a syringe plunger comprising: a plunger unit having a drive rod comprising the plunger holding apparatus, a crossmember on the lower end of the drive rod, and a plurality of syringe plungers projecting downward and parallel to the drive rod, a barrel unit comprising a support and rows of syringe barrels arranged in a parallel manner, protruding downwards from the support, and having lower and upper syringe openings, and a running region, wherein each syringe plunger engages a syringe barrel through, an upper syringe opening and is sealingly guided in the running region, and the barrel holding apparatus is above the syringe barrel and is connected to the support.

Abstract: An electronic dosing drive comprising a support structure, a threaded spindle with an external thread for driving a plunger, at least one first guide element is firmly connected, and is guided parallel to the threaded spindle on a second guide element, a spindle nut having an internal thread is engaged with the external thread of the threaded spindle, an electric drive motor having a motor shaft is coupled with the spindle nut and is attached to the support structure, an electric control apparatus is connected to the electric drive motor, where the external thread of the threaded spindle has multiple threaded areas that are separated from each other by first flattenings on their circumference extending in the longitudinal direction, and the first flattenings have guide areas that abut the core diameter of the internal thread of the spindle nut.

Abstract: The invention relates to a pipetting device, more particularly a pipette or repeater pipette, for pipetting fluid laboratory samples, comprising: an electric control apparatus, by means of which a pipetting process is electrically controllable, a movable part, by means of the movement of which the fluid sample is pipettable, an electrically actuatable motor apparatus, by means of which the movement of the movable part is driveable depending on at least one first speed value defining the speed of the movable part, a measuring apparatus, by means of which at least one measured value which is influenced by the drag caused when pipetting the fluid sample is measurable, wherein the electric control apparatus is configured for the purposes of the at least one first speed value being fixable by the electric control apparatus, depending on at least one measured value. The invention furthermore relates to a method for operating the pipetting device.

Abstract: A pipette for use with a pipette tip includes a housing, a pin on the bottom end of the housing holding a pipette tip having first means for form-fit connection and a second means for form-fit connection which can be shoved onto the pin, constricting the pin, and/or expanding the tip before form-fit connection with the pin, a drive apparatus, at least one locking sleeve arranged concentric to the pin which is guided toward the pin in the housing, wherein the locking sleeve has a locked position having a pin in the inside constricted by shoving on a pipette tip, and/or is bordered on the outside by a tip shoved onto the pin, preventing a release from the pin, and the locking sleeve is upwardly displaceable out of the locked position so that the pin, and/or the tip is released, and the tip is removable from the pin.

Abstract: A spindle drive comprising a threaded spindle with an external thread, a spindle nut with an internal thread that is in engagement with the external thread of the threaded spindle, characterized in that the external thread of the threaded spindle has multiple threaded areas that are separated from each other by first flattenings on their circumference extending in the longitudinal direction, and the first flattenings have guide areas that abut the core diameter of the internal thread of the spindle nut.

Abstract: A pipette for actuating a syringe including a strip-shaped housing with first and second receptacles for inserting fastening sections. First and second releasable holding mechanism for holding the fastening sections. First and second displacing mechanisms to displace a receiving body in the housing from the receptacles. A toothed rack and a pawl are connected to an actuation rack. A cover has a coupling element and longitudinal slot and spring.

Abstract: An electronic dosing drive comprising a support structure, a threaded spindle with an external thread for driving a plunger, at least one first guide element is firmly connected, and is guided parallel to the threaded spindle on a second guide element, a spindle nut having an internal thread is engaged with the external thread of the threaded spindle, an electric drive motor having a motor shaft is coupled with the spindle nut and is attached to the support structure, an electric control apparatus is connected to the electric drive motor, where the external thread of the threaded spindle has multiple threaded areas that are separated from each other by first flattenings on their circumference extending in the longitudinal direction, and the first flattenings have guide areas that abut the core diameter of the internal thread of the spindle nut.

Abstract: A method for dosing liquid by means of a pipette with an adjustable dosing increment, a display apparatus, a drawing lever to draw liquid into a syringe, and a control button to discharge liquid in steps from the syringe, and the syringe actuated by means of the pipette, wherein: 1.1. the syringe is releasably connected to the pipette, 1.2. the dosing increment is optionally set, or the previously set dosing increment is retained, 1.3. the dosing volume set by the dosing increment is displayed by means of the display apparatus, 1.4. liquid is sucked into the syringe by actuating the drawing lever, 1.5. the respective position of a drive element of a drive mechanism of the pipette for filling and draining the syringe when the drive element is shifted along a path is detected, 1.6.

Abstract: The invention relates to a pipetting device, more particularly a pipette or repeater pipette, for pipetting fluid laboratory samples, comprising: an electric control apparatus, by means of which a pipetting process is electrically controllable, a movable part, by means of the movement of which the fluid sample is pipettable, an electrically actuatable motor apparatus, by means of which the movement of the movable part is driveable depending on at least one first speed value defining the speed of the movable part, a measuring apparatus, by means of which at least one measured value which is influenced by the drag caused when pipetting the fluid sample is measurable, wherein the electric control apparatus is configured for the purposes of the at least one first speed value being fixable by the electric control apparatus, depending on at least one measured value. The invention furthermore relates to a method for operating the pipetting device.