A pipetting device (1) for receiving and dispensing fluid volumes, comprising a housing (2) with a holding portion (3), which is constructed for holding the pipetting device (1) by means of an operator's hand, a support device (4), which is designed for supporting the pipetting device (1) on an operator's finger, the support device (4) being rotatable relative to the holding portion (3), preferably about a longitudinal axis (L) of the pipetting device (1). The invention further relates to a pipetting device (1) for receiving and dispensing fluid volumes, comprising a releasable positive connection between a first and a second component of the pipetting device (1). Because the support device is adjustable relative to the holding device into a plurality of different defined rotational positions the pipetting device can be used by either left-handed and right-handed operators or by operators with hands of different sizes.
The invention relates to a pipetting device for receiving and dispensing fluid volumes. The pipetting device has a drive device with an electric motor and a gear device with a first output device. The gear device is driven by the electric motor by means of a rotary motion and is designed to transmit a rotary motion of the electric motor to the first output device. According to the invention, the gear device has a second output device and is designed to transmit a rotary motion of the electric motor to the second output device.
A pipetting device for taking up and dispensing fluid volumes has a displacement device with a displacement mechanism and a displacement housing. The pipetting device has an adjusting device for changing the stroke of the displacement mechanism. The stroke of the displacement mechanism can be adjusted, and the corresponding adjustment value can be displayed by an adjustment indicator. A coupling device, in a use state, couples the adjusting device to a volume indicator and decoupled the adjustment device from the adjustment indicator. In an adjustment state, the adjusting device is coupled to the adjustment indicator and is decoupled from the volume indicator. The adjustment indicator displays an adjustment value for the stroke of the displacement means. The adjustment indicator can be adjusted in an adjustment state, whereas it is fixed in a use state.
A valve block assembly for a bottle attachment apparatus for handling liquids has a valve block, an intake valve insert and/or an exhaust valve insert, and a valve receptacle assigned to the respective valve insert. The valve insert is inserted in a replaceable and sealing manner in the valve receptacle. The valve insert has a stop portion, a fastening portion distinct therefrom and a sealing portion distinct from both. The associated valve receptacle has stop, fastening, and sealing portions matching the equivalent portions of the valve insert. When the valve insert is installed correctly both the stop portions and the sealing portions bear on one another in a planar manner.
B05B 11/00 - Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
B05B 11/10 - Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
G01F 11/02 - Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
A pipetting device for taking up and dispensing volumes of fluid, which has an ejector mechanism which is actuable by means of an actuating means to eject or release a pipette tip plugged onto the pipetting device. The pipetting device has a coupling mechanism which is configured such that, in the unactuated state, actuating means and ejector mechanism are decoupled, and, when the actuating means is actuated, the latter is coupled to the ejector mechanism, causing a force exerted on the actuating means to transfer to the ejector mechanism. Also, the pipetting device can have a positioning mechanism which, when a pipette tip is not plugged on and the actuating means is unactuated, holds an ejector means, of the ejector mechanism in a basic position which is located between an ejection position and a plug-on position with a pipette tip plugged on.
A temperature-control device for receiving of laboratory vessels has a hollow housing with a temperature-control medium. The temperature-control device is thermally conditioned before use, and during use, the conditioned thermal energy is, in a finite time period, either absorbed from the laboratory vessels or transferred to same. The lower part of the housing has a base and the upper part of the housing has, opposite to said base, a receiving region which, in an upward direction, delimits the hollow internal region of the housing. In the receiving region, depressions directed inward serve as receivers for the laboratory vessels to be temperature-controlled. The hollow housing has an air space separated from the internal region. In the internal region, the temperature-control medium flows at least partially around and/or through a horizontally extending absorber element, and said absorber element is connected to the receiving region in thermally conductive manner.
A pipette (1) having a cylinder (10), a piston (8), a volume display (25) for displaying a pipetting volume (14) associated with the piston stroke, a display adjustment mechanism (22) for changing the volume display (25), an adjustment display for indicating an adjustment of the pipette (1) via the volume display (25), and a volume adjustment mechanism (19) for changing the piston stroke, the volume adjustment mechanism (19) being coupled to the display adjustment mechanism (22) in a first mode of operation of the pipette (1), and the volume adjustment mechanism (19) being decoupled from the display adjustment mechanism (22), and the display adjustment mechanism (22) being coupled to the adjustment display in a second mode of operation of the pipette (1), a method of operating such a pipette.
A computer-implemented control device for controlling an automated pipetting system. The control device is designed to control at least one actuator for moving a pipetting apparatus between receptacle devices for liquids that are to be pipetted. The control device is designed, so as, before the execution of multiple specified transfer steps by the pipetting apparatus and the actuator, to analyze the specified order of execution of these transfer steps and the liquid to be pipetted in these transfer steps and, after the analysis, to alter the order of execution of these transfer steps and/or to combine multiple instances of these transfer steps automatically. Additionally, an automated pipetting system has such a control device, and a method for controlling the automated pipetting system are provided.
A dispenser for receiving and dispensing volumes of fluid, on which a piston/cylinder unit having a piston and a cylinder, can be fitted in a releasable manner by means of a movement running at least substantially in an axial direction of the dispenser. The dispenser has a piston actuator for moving the piston relative to the cylinder. The piston actuator is arranged in a movable manner in the dispenser and is driven by means of a drive. The dispenser has a locking element which is arranged in a movable manner in the dispenser and is driven by a further drive. Also disclosed is a system for receiving and dispensing volumes of fluid, to a method for fitting a piston/cylinder unit in a releasable manner on a dispenser, and to a method for releasing a piston/cylinder unit which has been fitted on a dispenser.
A dispenser for taking up and discharging fluid volumes which has an exchangeable piston-cylinder unit. The dispenser has a housing and a device for incremental distance measurement that, when there is relative movement between the piston and the cylinder, the distance traveled by the piston relative to the housing can be determined incrementally. The dispenser has a piston actuation member which can be releasably connected to the piston moving the piston in order to take up and/or discharge fluid volumes. The dispenser has a position determining device which has a first position element and a second position element. The first position element is fixed in or on the housing of the dispenser. The second position element is coupled so as to be able to move with the piston actuation member. The position determining device is for continuously sensing the position of the second position element.
A cell culture insert with a hollow cylindrical housing having an upper end-face opening delimited by an opening edge and a lower end-face base designed as a membrane, support feet being arranged on the base edge of the housing and/or on the base and at least one support arm. The legs protrude downward for supporting the housing on a support in a non-tipping manner with a small uniform spacing between the base and the support. The at least one support arm protrudes outwards at the opening edge and can be placed on an edge of a well plate in which a plurality of wells. The support arm is an edge hanging element, and for this purpose, has a support section that runs radially relative to the housing and a hanging section that runs from the support section downwards in the direction of the base of the housing.
A method for detecting the type of an exchangeable piston-cylinder unit for a dispenser, to a piston-cylinder unit having at least one radially oriented information carrier section, and at least one axially oriented information carrier section, both of which at least partially specifies the type of piston-cylinder unit, and to a dispenser having an acquisition device for automatically identifying the type of piston-cylinder unit arranged on the dispenser. The method has at least the following steps: a) detachably mounting the piston-cylinder unit on the dispenser by at least an axial movement; b) detecting completion of a successful mounting of the piston-cylinder unit on the dispenser with a sensor device; c) detecting an information of the axially oriented information carrier section; d) detecting an information of the radially oriented information carrier section; and e) determining the type of the piston-cylinder unit mounted on the dispenser from the detected information.
A method for calibrating and controlling a pipetting device for metered liquid with a multichannel, automated micrometering unit. All of the channels of the pipetting device are calibrated using a camera which detects the expelled droplets of the liquid, so that the volume thereof can be determined by means of a control device. The method makes it possible to carry out a calibration of the individually dispensed liquid volumes in droplet form to a prescribed volume deviation with a different number of possibly necessary repetitions for each individual channel.
An exhaust valve assembly for a bottle attachment apparatus for handling liquids has a valve housing which forms a valve chamber having an inlet and an outlet, an exhaust valve body disposed on the inlet in the valve chamber, and a safety valve body disposed on the outlet in the valve chamber. The exhaust valve body is biased toward an exhaust valve seat, counter to the flow direction of the liquid and the safety valve body is biased toward a safety valve seat in the flow direction of the liquid. The safety valve seat is integrally molded on the valve housing.
G01F 11/02 - Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
B05B 11/00 - Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
G01F 11/04 - Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the free-piston type
G01F 11/28 - Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement
B67C 3/00 - Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
B67C 3/26 - Filling-heads; Means for engaging filling-heads with bottle necks
A housing for a laboratory appliance with a floor, ceiling, rear wall, side walls and front wall, which together enclose a work space. The front wall is movable between closed position and open positions. A work area in which liquids can be handled is provided in the work space. A filter device for ambient air is connected to the work space via at least one air outlet. At least one air inlet is connected to the environment, and a fan and an air filter are located downstream from the air inlet and upstream from the air outlet. An outflow opening is also located on the housing. The at least one air outlet and the at least one outflow opening are arranged on the housing such that, during operation of the filter device, the filter air stream flows substantially parallel to and along the work area.
B08B 15/02 - Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
A housing for a laboratory device, having floor, ceiling, rear, side, and front walls, which together form an operating chamber, wherein the front wall is movable upward and downward between a lowered closed position and a raised open position in a linear and simultaneously pivoting manner and, in the open position of the front wall, the operating chamber is open on the front side of the housing. The top wall section having top and bottom wall sections connected about a first pivot axis and transitions in an arc shape to a plate-shaped connection section extending at an angle to the top wall section, or is connected thereto in an angularly rigid manner, and a connection section is hinged in a pivoting manner to the ceiling on the edge thereof distant from the top wall section parallel to the first pivot axis, at a distance from the front wall.
A cylinder-and-piston assembly for a bottle attachment apparatus for handling liquids in which the stroke length of the piston of the cylinder-and-piston assembly is delimited by a stroke length stop when suctioning from the cylinder and is delimited by a readjustment stop when exhausting into the cylinder. The readjustment stop is disposed on the piston or on the cylinder housing and interacts with a fixed stop. The readjustment stop is accessible and adjustable by way of a removable seal. The seal is connected by way of ribs to a piston bearing. The readjustment stop is disposed below this removable seal. The seal has a molding and the piston bearing has a counter molding. Displacement of the seal in relation to the piston bearing moves the seal in the longitudinal direction, and by this movement, the seal is removed in a manner that preferably is not capable of re-assembly.
B67C 3/28 - Flow-control devices, e.g. using valves
B67C 3/26 - Filling-heads; Means for engaging filling-heads with bottle necks
B67C 9/00 - Emptying bottles, jars, cans, casks, barrels, or similar containers, not otherwise provided for
G01F 11/02 - Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
26.
Valve block assembly for a bottle attachment apparatus
A valve block assembly for a bottle attachment apparatus for handling liquids has a valve block, an intake valve insert and/or an exhaust valve insert, and a valve receptacle assigned to the respective valve insert. The valve insert is inserted in a replaceable and sealing manner in the valve receptacle. The valve insert has a stop portion, a fastening portion distinct therefrom and a sealing portion distinct from both. The associated valve receptacle has stop, fastening, and sealing portions matching the equivalent portions of the valve insert. When the valve insert is installed correctly both the stop portions and the sealing portions bear on one another in a planar manner.
B05B 11/00 - Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
G01F 11/02 - Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
An exhaust line assembly for a bottle attachment apparatus for handling liquids has an outrigger-type mount, an exhaust line which is disposed and guided in the mount and which terminates in a tip, and a mounting lug which has a closure cap attached to the end thereof and which is fastened to the exhaust line assembly, the tip of the exhaust line being closable by way of the closure cap. The mounting lug at that end thereof which is fastened to the exhaust line assembly is articulated so as to be pivotable by a rotary joint which has a physically present axis of rotation.
B67C 3/26 - Filling-heads; Means for engaging filling-heads with bottle necks
B05B 11/00 - Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
G01F 11/02 - Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
B67C 3/28 - Flow-control devices, e.g. using valves
A cylinder-and-piston assembly for a bottle attachment apparatus for handling liquids provides a cylinder attachable to a valve block assembly, a piston, displaceable in a sealed manner in the longitudinal direction within the cylinder, and a cylinder housing connected to the piston and externally encompassing the cylinder. The piston is displaceable in the cylinder and the stroke length of the piston in the cylinder is delimited by a fixed stop, which interacts with a stroke length stop on the cylinder housing. The cylinder housing has a longitudinal slot running in the longitudinal direction and on the external side thereof has a scale assigned to this longitudinal slot. The stroke length stop on the cylinder housing is adjustable in the longitudinal direction and is interlockable in the respective position.
G01F 11/00 - Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
B05B 11/00 - Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
G01F 11/02 - Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
An exhaust valve assembly for a bottle attachment apparatus for handling liquids has a valve housing which forms a valve chamber having an inlet and an outlet, an exhaust valve body disposed on the inlet in the valve chamber, and a safety valve body disposed on the outlet in the valve chamber. The exhaust valve body is biased toward an exhaust valve seat, counter to the flow direction of the liquid and the safety valve body is biased toward a safety valve seat in the flow direction of the liquid. The safety valve seat is integrally molded on the valve housing.
G01F 11/02 - Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
G01F 11/04 - Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the free-piston type
G01F 11/28 - Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement
B05B 15/00 - SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES - Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
B67C 3/00 - Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
B67C 3/26 - Filling-heads; Means for engaging filling-heads with bottle necks
B05B 11/00 - Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
A control unit for controlling a pipetting machine a pipetting machine, and a method for controlling a pipetting machine, wherein the control unit controls at least one actuator for moving a pipetting device between receptacle units for liquids to be pipetted and for receiving or dispensing liquids to be pipetted. The control unit, by selecting one or more graphic receptacle unit equivalents which correspond to receptacle units, assigns at least one transfer parameter to the receptacle unit equivalents. The transfer parameter corresponds to a transfer volume, which is to be received from the receptacle unit corresponding to the respective receptacle unit equivalent or is to be dispensed into the receptacle unit corresponding to the respective receptacle unit equivalent. The control unit is additionally designed so that selected source receptacle unit equivalents are simultaneously assignable to multiple target receptacle unit equivalents.
A pipette device having a pipette unit (1), a positioning unit (4), a micro-dosing unit (5) and a control device (6). The micro-dosing unit (5) is implemented separately from the pipette unit (1). However, it can be coupled to the pipette unit (1) in a precisely defined relative position. The pipette unit (1) thus has a coupling device (10) and the micro-dosing unit (5) has a corresponding counter-coupling device (11). One of the two devices can be switched. By switching the coupling device (10) and/or the counter-coupling device (11), the micro-dosing unit (5) can be coupled to the pipette unit (1) or decoupled from the pipette unit (1) as desired. If the micro-dosing unit (5) is coupled to the pipette unit (1), it can be moved to different operating positions together with the pipette unit (1).
A piston-operated pipette with a drive unit with a piston drive and a displacement unit mounted on the drive unit, the displacement unit being dismountable from the drive unit, the drive unit having an actuating drive for the piston drive and a receiving section for the displacement unit. The displacement unit has a fastening section which fits the receiving section of the drive unit, there being a first detachable mechanical connection between the actuating drive and the piston drive and there being a second detachable mechanical connection between the receiving section of the drive unit and the fastening section of the displacement unit. The second detachable mechanical connection is made as a magnetic connection. A mechanical arrangement for breaking the magnetic connection is provided between the receiving section and the fastening section, the magnetic connection being releasable by actuating the arrangement for breaking the magnetic connection.
A method for leak testing of hand-held piston stroke pipettes and a corresponding leak testing apparatus (1) for performing the method. Essential to the system is a holder (8) for the sealed connection of a pipette tip (3) to the leak-testing apparatus. A line system (9) with connecting sections of the leak-testing apparatus forms a specific connection volume. The pipette tip (3) is evacuated to a measuring pressure below atmospheric pressure. With the vacuum pump (5) disconnected and the connection volume sealed off, the pressure is measured after a specific time interval, and any possible rise in pressure is determined. An indication of the serviceability of the pipette (2) is generated from the pressure rise determined.
G01M 3/28 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for valves
G01M 3/26 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
A bottle top dispenser for handling liquids having a piston-cylinder arrangement in an outside housing. At least one actuating button (49) that can be pressed downwards is arranged on the upper side of the outside housing. The outside housing (2) can be provided with ventilation openings (48) that can be hidden beneath the actuating button (49). The bottle arrangement is also characterized by a specific arrangement of a sensor system (65) in relation to a measuring strip (64) on a piston rod (28). The path measuring signal can be evaluated by means of a magnetoresistive sensor system, especially such a system based on the AMR effect. The arrangement of the measuring strip (64) in relation to the longitudinal central axis of the piston rod (28) is of considerable importance.
A pipette for a pipette system comprising a pipette and a syringe. The pipette housing has a longitudinal axis. A syringe to be handled with the pipette is insertable with its fastening portion and plunger head into the pipette housing and is removable or discardable from said pipette housing in the direction of the longitudinal axis of the pipette housing, i.e., axially. The syringe has as cylinder and a plunger with a plunger head which projects out of the end of the cylinder even when the plunger has been completely inserted into the cylinder. A pipette housing comprises an axially accessible plunger gripping device for the plunger head of the syringe. An actuating device for the plunger gripping device is mounted on the plunger displacing device and is axially displaceable with said adjusting device.
A dosing device for liquids, with a distributor rail and a plurality of dosing units for the liquid that are hydraulically connected to the replaceable distributor rail. Each dosing unit has a valve unit, preferably a suction valve, a discharge valve and a discharge cannula. A piston-cylinder unit is detachably arranged on each valve unit for drawing in and measured discharging of the liquid. Each valve unit has a hydraulic connection element for detachable hydraulic connection to the distributor rail. The distributor rail has an elongate fluid supply line, a supply connection for the liquid being provided on an end of the distributor rail and dosing unit connections being distributed laterally along the length of the rail. Each of the dosing unit connections are detachably coupled to the hydraulic connection elements of the dosing units. The distributor rail is a replaceable part made of a preferably recyclable, injection-moldable plastic.
A bottle top dispenser for handling liquids having a piston-cylinder arrangement in an outside housing. At least one actuating button (49) that can be pressed downwards is arranged on the upper side of the outside housing. The outside housing (2) can be provided with ventilation openings (48) that can be hidden beneath the actuating button (49). The bottle arrangement is also characterized by a specific arrangement of a sensor system (65) in relation to a measuring strip (64) on a piston rod (28). The path measuring signal can be evaluated by means of a magnetoresistive sensor system, especially such a system based on the AMR effect. The arrangement of the measuring strip (64) in relation to the longitudinal central axis of the piston rod (28) is of considerable importance.
A multichannel pipette, including a grip part defining a longitudinal axis and including a piston-driving device movable axially thereon, a displacement part rotating about the axis and having cylinder and piston arrangements, and a connection device for detachably connecting the grip part to the displacement part and permitting a rotation of the displacement about the longitudinal axis. The connection device includes threaded connection elements engaged with one another. The pistons move axially to the cylinders via a piston-driving device. A connection part of the threaded elements is axially connected with the cylinders and includes a clearance for a rotary bearing provided therein. Form-fit configurations on the support and connection parts are engaged to prevent a reverse rotation of the connection part relative to the support part. By a manual release action, the form-fit configurations disengage, such that the connection part rotates in a reverse rotation relative to the support part.
A motorized pipette is described for pipetting and titration of especially small amounts with an especially slow rate. An interruptable dispensing cycle allows extremely accurate titration and pipetting in which a take-up cycle is continued with an additional volume of a limited amount. Additionally, a certain minimum dispensing rate, which is preferably preset at the factory, for certain operating modes can be provided.
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