Abstract: A laboratory device, in particular a rotary evaporator, serves for evaporating a substance, preferably under reduced pressure, and comprises an evaporation flask for receiving the substance to be evaporated, a condenser for condensing the evaporated substance and a vapor passage for passing through the evaporated substance, which vapor passage is arranged in a vapor path between the evaporation flask and the condenser. The laboratory device further comprises a detection unit for foam detection, which detection unit is provided outside of the vapor passage and/or the evaporation flask.

Abstract: A lab stirrer comprises a housing, a stirring shaft rotatably supported about an axis in the housing and a drive to drive the stirring shaft to make a rotary movement about the axis. A blocking device is provided to block the stirring shaft against a rotation about the shaft axis.

Abstract: The invention relates to a rotary evaporator comprising a rotary drive and a fastening device attached to the rotary drive and having a receiving space for receiving an evaporator flask rotatable by the rotary drive, wherein the fastening device comprises a connector section, in particular a ring-shaped connector section, at the rotary drive side and a retainer element, in particular a ring-shaped retainer element, at the evaporator flask side that coupled to the connector section and that is rotatable relative to the connector section between a starting position and an end position.

Abstract: The invention relates to a laboratory device, in particular to a peristaltic pump, having an accessory part, in particular a pump head, that is removably arranged at the laboratory device; and having an apparatus for an automatic recognition of the accessory part from a plurality of accessory parts, in particular mutually different pump heads, removably arrangeable at the laboratory device, wherein the recognition apparatus has a coding at the accessory side and a detection unit for detecting the coding at the laboratory device side.

Abstract: A magnetic stirrer (11) comprises a magnetic drive and a placement surface (17) for a laboratory vessel containing a substance to be stirred. The magnetic drive is designed to generate a magnetic field which varies such that a magnetic stirring element can be driven to produce a stirring motion in the laboratory vessel, in order to stir the substance. The magnetic stirrer (11) also comprises a heating device (15), which is designed to heat the placement surface in order to heat up the substance, and a display device (23), which is designed to display the current temperature of the placement surface.

Abstract: A laboratory device, in particular for shaking and/or mixing substances, comprises a base unit, that comprises a drive apparatus, and a pivot unit, that is pivotably connected to the base unit by means of a bearing element about axes oriented perpendicular to a central axis of the base unit. The drive apparatus comprises an arrangement of magnetic elements at an inner side of a roll-off surface of the base unit and a control apparatus that is configured to control the arrangement of magnetic elements for generating a peripheral magnetic field along a closed path at an outer side of the roll-off surface to drive the roll-off section of the pivot unit by means of magnetic attraction and/or repulsion to make a rolling-off along said path.

Abstract: A rotary evaporator for the vacuum distillation of a liquid is disclosed. The rotary evaporator contains an evaporator flask and a vapor feeder with an interior volume connected downstream of the evaporator flask. The rotary evaporator further contains a rotor that has a mechanical foam breaker within the interior volume of the vapor feeder. Further, a cooler is connected downstream of the vapor feeder.

Abstract: The invention relates to a laboratory device, in particular to a magnetic stirrer, having a heating unit for heating a medium, in particular a liquid, in a container, and having a regulating unit that is configured to regulate the temperature of the medium, of the heating unit and/or of the container by controlling the heating power of the heating unit, wherein a weight determination unit is provided to determine the weight of the medium, and wherein the regulation of the temperature takes place in dependence on the weight determined.

Abstract: A rotary evaporator is provided. The rotary evaporator includes a rotary drive and a piston support (11) for an evaporator piston which can be coupled to the rotary drive. The piston support (11) comprises two transverse carriers (19, 21) for supporting the evaporator piston at two support regions spaced apart from one another and a longitudinal guide (25) having a guide element (27), on which longitudinal guide the two transverse carriers (19, 21) are moveably arranged in order to vary the mutual spacing of the two transverse carriers (19, 21). The guide element (27) is displaceably guided in the longitudinal direction (23) in order to displace the evaporator piston between a coupling position with the rotary drive and a position spaced back from the rotary drive.

Abstract: The invention relates to a laboratory device, in particular to a peristaltic pump, having an accessory part, in particular a pump head, that is removably arranged at the laboratory device; and having an apparatus for an automatic recognition of the accessory part from a plurality of accessory parts, in particular mutually different pump heads, removably arrangeable at the laboratory device, wherein the recognition apparatus has a coding at the accessory side and a detection unit for detecting the coding at the laboratory device side.

Abstract: The invention relates to a rotary evaporator comprising a rotary drive and piston support (11) for an evaporator piston which can be coupled to the rotary drive, wherein the piston support (11) comprises two transverse carriers (19, 21) for supporting the evaporator piston at two support regions spaced apart from one another and a longitudinal guide (25) having a guide element (27), on which longitudinal guide the two transverse carriers (19, 21) are moveably arranged in order to vary the mutual spacing of the two transverse carriers (19, 21), wherein the guide element (27) is displaceably guided in the longitudinal direction (23) in order to displace the evaporator piston between a coupling position with the rotary drive and a position spaced back from the rotary drive.

Abstract: A rotary evaporator comprises a device (10) for securing a ground connection, comprising a ground sleeve and a ground core, between an evaporator piston and a vapor leadthrough. The securing device has a receiving opening (17) for that end of the evaporator piston provided with the ground sleeve, and a securing element (13) which can be moved between a retaining position and a release position and which has a retaining section (31) that, in the retaining position, projects into the receiving opening (17) and that, in the release position, is at least partially retracted from the receiving opening (17), so as to secure or release, as desired, that end of the evaporator piston provided with the ground sleeve.

Abstract: The invention relates to a rotary evaporator for the vacuum distillation of a liquid, comprising an evaporating flask and a cooler, which is arranged downstream of the evaporating flask and is connected to the evaporating flask by means of a vapor feeder, wherein a rotor having a mechanical foam breaker is provided inside the vapor feeder.

Abstract: A lab stirrer comprises a housing, a stirring shaft rotatably supported about an axis in the housing and a drive to drive the stirring shaft to make a rotary movement about the axis. A blocking device is provided to block the stirring shaft against a rotation about the shaft axis.

Abstract: The invention relates to a rotary evaporator comprising a rotary drive having a hub and a clamping insert with a sleeve-like basic shape, in particular a clamping sleeve, for the clamping of a steam leadthrough formed as a hollow glass shaft in the hub of the rotary drive, wherein the clamping insert has a longitudinal axis and a first and a second axial end, wherein the clamping insert has two clamping sections which are arranged spaced apart from one another in the longitudinal direction and which each have an outer cross-section tapering toward the first end and of which the clamping arrangement arranged closer to the second end has a larger maximum outer cross-section.

Abstract: The invention relates to a method for the vacuum distillation of a liquid, in particular by means of a rotary evaporator, wherein at least one fraction of the liquid is evaporated at a reducing pressure, a vapor temperature correlating with a boiling temperature is determined by means of a temperature sensor and a pressure present at the time of the determination of the vapor temperature and correlating with a boiling pressure is determined and a minimal pressure, which may not be undercut in the distillation, is automatically determined by using the determined vapor temperature and to the determined pressure.

Abstract: The invention relates to a distillation apparatus, in particular a distillation apparatus configured as a piece of laboratory equipment, having a distillation vessel for receiving a mixture to be distilled, wherein a removal device is provided which is configured for the automated removal of a distillation residue from the distillation vessel.

Abstract: The invention relates to a rotary evaporator having an apparatus for the securing of a ground joint including a ground sleeve and a ground core between an evaporator flask and a steam leadthrough, wherein the securing device has a fastening section at the ground core side and a snap connector at the ground sleeve side and pivotably supported at the fastening section at the ground sleeve side between a release position and a holding position in order selectively to release or firmly hold the piece of laboratory equipment at the ground sleeve side.

Abstract: The invention relates to a rotary evaporator comprising a rotary drive having a hub and a clamping insert with a sleeve-like basic shape, in particular a clamping sleeve, for the clamping of a steam leadthrough formed as a hollow glass shaft in the hub of the rotary drive, wherein the clamping insert has a longitudinal axis and a first and a second axial end, wherein the clamping insert has two clamping sections which are arranged spaced apart from one another in the longitudinal direction and which each have an outer cross-section tapering toward the first end and of which the clamping arrangement arranged closer to the second end has a larger maximum outer cross-section.

Abstract: The present invention relates to a retroaction-protected transmission module for a motor for driving a retroaction-endangered load, in particular of a gate, having a transmission (11) having a drive side and an output side and a blocking clutch (1) having a clutch state and a blocking state, the blocking clutch including a driveshaft (12), which has driver parts (2) on one end, between which clamping bodies (3) are movably located, which surround a head (4) of an output shaft (13), the head (4) of the output shaft (13) having coupling faces (5), which are in contact with the clamping bodies (3) in the clutch state and via which, in the clutch state, the clamping bodies (3) carried by the driver parts (2) in the event of a rotation of the driveshaft (12) transmit a torque from the driveshaft (12) to the output shaft (13), and a braking ring (6) having a clamping face (7) being located around the clamping body (3), against which the clamping bodies (3) are pressed by the coupling faces (5) in the blocking state