Abstract: A device for pipette tips having a refill pack, a plate having holes, pipette tips, a shell below the plate, an inner lid above the plate which has a base and side walls and a latch; a holder having a bottom; an outer lid having a base and side walls; a pivotal connection for the lid and holder; a support projecting from a side wall engaging the bottom of a lid side wall; a second latch having a support which latches with the first latch; an unlocking button having an actuator on the outside of the second lid side wall and a pressing element on the inside of the second lid side wall which may be pressed against the outside of the first lid side wall to deform the first lid side wall and undo the latching between the first and second latches.

Abstract: A metering head for a metering machine having a carrier having parallel attachments for picking up pipette tips, wherein each attachment has: a tube having a supporting protrusion at the bottom end, at least one sleeve which surrounds the tube and can be axially shifted on the tube, and at least one elastomer O-ring which surrounds the tube, a pressure plate above the sleeves having a plurality of first holes through which the tubes extend, wherein the pressure plate can be shifted along the tubes from a release position into a clamping position where the sleeves are pressed, at the bottom ends, against the adjacent O-rings, and the O-rings are expanded to clamp pipette tips; and a first shifting apparatus connected to the pressure plate moving the pressure plate between the release position and clamping position.

Abstract: The invention relates to a grid voltage-operated refrigerating device, in particular an ultra-low-temperature refrigerating device, comprising a refrigerator door (2) which has a closure lever (22) that is pivotally hinged between an open position and a locked position and comprising locking means (24) which are paired with the closure lever, have an electric motor-actuated and/or electromagnetically actuated locking element (26) and lock or release the pivoting of the closure lever depending on a code actuation that can be entered by an operator using a code input unit (20). The locking means and the code input unit are paired with an electronic control unit (14) and grid voltage-independent battery buffering means (13) such that in response to a grid voltage outage, the code actuation and a release for a specified minimum period of time are made possible without a grid voltage supply.

Abstract: The invention relates to a control apparatus for a refrigerator compressor having at least one two-phase AC asynchronous motor (K1, K2), having mains connection means (10) for connection to a preferably public voltage supply network Which nominally provides a mains AC voltage of between 85 V and 264 V, in particular between 100 V and 230 V, first voltage converter means (14) which are connected downstream of the mains connection means and are intended to generate an intermediate voltage, in particular an intermediate DC voltage, from the mains AC voltage, second voltage converter means (16-1, 16-2) which are connected downstream of the first voltage converter means and are intended to generate an output signal which is independent of a level and a mains frequency of the mains AC voltage, in particular has a constant voltage and/or frequency in periods, and is intended to control the refrigerator compressor with an AC voltage of a plurality of differently predefinable voltage levels, wherein the mains connecti

Abstract: A device for positioning vessels, with a holder for vessels, comprising a series of receptacles arranged on a circular line, for a circular ring-shaped vessel chain, a central area, arranged within the series of receptacles, and having further receptacles for single vessels containing reagents, and means for aligning, and with a carrier for single vessels, which comprises a holding plate in the form of a circular disc or of a part of a circular disc, which has holes for single vessels at certain positions, and which has at least one further means for aligning the carrier to the means for aligning the holder in a certain position, wherein in this position, the holes are aligned to certain further receptacles, the remaining further receptacles are covered up by the holding plate, and single vessels filled with reaction liquid can be inserted into the holes and into the further receptacles aligned thereto.

Abstract: A culture flask comprising a culture chamber in a flask body comprising an even bottom wall with a growth surface on the top side, an even cover wall at a section from the bottom wall, and side walls that bridge the distance between the margins of the bottom wall and cover wall, an opening that is in adjacent regions of a side wall and the even cover wall at a distance from the bottom wall, and a hollow cylindrical flask neck that is connected to the margin of the opening and is aligned at a sharp angle to the growth surface so that the serological pipette, a scraper, a cannula or another elongated device for adding or removing material can be placed on the rear corners of the growth surface from the outside through the flask neck.

Abstract: Cuvette, comprising at least one measuring area on each one of two arms that are pivotally connected to each other such that from a swung-apart condition, they can be swung together into a measuring position in which the two measuring areas have a distance for positioning a sample between the measuring areas, and means for positioning the two arms in a measuring position in a cuvette shaft of an optical measuring device with a sample between the two measuring areas in a beam path of the optical measuring device that crosses the cuvette shaft.

Abstract: The invention relates to a single-use connection device for insertion into a connection opening of a bioreactor, in particular in a connection opening of a top plate of a dimensionally-stable bioreactor or in a connection opening of a connection element of a pouch bioreactor. The single-use connection device is inserted in a connection opening of a top plate of a bioreactor and/or in a connection opening of a pouch reactor and is provided with multiple passages and an attachment section, wherein the single-use connection device is formed as a single piece and is made of plastic. The attachment section, on an outer peripheral surface, has an attachment structure for attaching the single-use connection device in the connection opening.

Abstract: Cuvette, comprising at least one measuring area on each one of two arms that are pivotally connected to each other such that from a swung-apart condition, they can be swung together into a measuring position in which the two measuring areas have a distance for positioning a sample between the measuring areas, and means for positioning the two arms in a measuring position in a cuvette shaft of an optical measuring device with a sample between the two measuring areas in a beam path of the optical measuring device that crosses the cuvette shaft.

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 single-use bioreactor, suitable in particular for use in a parallel bioreactor system for applications in cell culture and/or microbiology, a head plate for such a single-use bioreactor and a process for manufacturing the single-use bioreactor and the head plate. The single-use bioreactor comprises a head plate, a dimensionally stable container and a mixer, the head plate and the container enclosing a reaction chamber, and the mixer having a mixer shaft and a stirring member, said mixer shaft being mounted rotatably about a rotational axis in a bearing and the stirring member being fastened torsionally rigidly to the mixer shaft. The mixer and the bearing are arranged entirely within the reaction chamber and the mixer shaft has a magnetic portion which is arranged and adapted in such a way that it can be coupled magnetically in an axial direction to a rotary drive.

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: A foam molding shell for a centrifuge bowl, a bowl for a centrifuge, a method for producing a thermal insulation encasing the bowl for the centrifuge and to a centrifuge. The foam molding shell is configured as a disposable tool for foam encasing the bowl for the centrifuge with the thermal insulating material. Thus, the production complexity and the production cost of the centrifuge bowl with the thermally insulated bowl for the centrifuge can be significantly reduced.

Abstract: A method for automatic speed control of an orbital shaker device to determine one of at least two stacked orbital shaker devices operating in an out of balance condition includes the steps of a) Starting the first orbital shaker device, b) Accelerating the first orbital shaker device, and c) Determining a vibration level of the first orbital shaker device, and d) Automatically decreasing a speed of the first orbital shaker device if the vibration level determined in step c) exceeds a predefined first threshold, wherein the steps a) to d) are additionally executed for a second orbital shaker device independently from the first orbital shaker device.

Abstract: A method of processing a liquid sample containing an initial quantity of nucleic acids that involves providing a plastic, disposable laboratory implement having at least one transparent wall segment made of a polypropylene mixed with an amount of a clarifier additive that is at least twice as high as is necessary to obtain transparency in the polypropylene, wherein the transparent wall segment exhibits a surface gloss greater than 160 as measured per DIN 67530 at an angle of 60°, bringing the liquid sample into contact with the at least one transparent wall segment and removing the liquid sample from the at least transparent wall segment, wherein the nucleic acid adsorption ratio for the transparent wall segment is less than 3 (wt/wt) relative to relative to the initial quantity of nucleic acids in the liquid sample.

Abstract: A system for titrating liquids, with a syringe or tip, comprising a holding device and at least one tag and a metering equipment, comprising an additional holding device for holding the syringe or tip on the holding device, a reading device for reading the tag of the syringe or tip held by the additional holding device, a driving device having a motor, which is detachably coupled with a plunger of the syringe when the same is held by the additional holding device, or which is coupled with a plunger which is arranged in a cylinder which is coupled with the tip via a fluid conduit, when the same is held by the additional holding device, an operating device for operating the metering equipment and a control device, connected with the operating device, the reading device and the driving device, which controls the movement of the plunger depending of the tag of the inserted syringe or tip.

Abstract: An ultra-low temperature freezer comprising an interior and a housing surrounding the interior and having an outer door. The interior comprises several cooling compartments in a stacked arrangement, each cooling compartment having an inner door. At least one upper cooling compartment has a supplementary seal for sealing its inner door compared to at least one lower cooling compartment.

Abstract: The invention relates to a pipetting apparatus for pipetting laboratory samples into a pipetting container which can be connected to the pipetting apparatus, which pipetting container is in particular designed according to the invention, comprising a container side and a first connection section, by means of which the pipetting container can be connected to the pipetting apparatus, and comprising an information carrying device with at least one information section, which carries information, on this container side; the pipetting apparatus comprising an electric information reading device, by means of which information contained on the information reading device can be read when the pipetting container is connected to the pipetting apparatus, and which comprises at least one electric sensor device, which comprises at least one sensor section, opposite to which a measuring space is formed, wherein the sensor device is configured to read the information content of at least one information section when the latter

Abstract: A screw cap lidded container for laboratory use includes a container body defining a chamber, a tubular section of the container body that is connected at the rear to the chamber and has a container opening in the front and an external thread on the outer periphery of the tubular section. There is a circumferential first sealing surface on the tubular section and at least one first projection, which projects from the container body at a peripheral position of the tubular section, and a screw cap having an internal thread on the inner periphery that can be screwed onto the external thread with thread play, a second sealing surface on the screw cap can be brought into sealing contact with the first sealing surface, and at least one second projection, which projects at a peripheral position of the screw cap.