EPPENDORF SE

The invention relates to a thermoblock for receiving and regulating the temperature of at least one laboratory specimen vessel in a laboratory temperature regulation device, more particularly in a PCR thermocycler, wherein the thermoblock has been produced by means of an additive manufacturing method using a material containing metal. The invention further relates to a method for producing the thermoblock and a computer-implemented method for the simulation of physical characteristics of the thermoblock to be produced in accordance with the invention.

In one aspect the invention relates to a computer implemented method for identifying a labware item ( 310, 320, 330, 340, 350 ), the labware item ( 310, 320, 330, 340, 350 ) comprising a first optical feature and a second optical feature, wherein the method comprises the steps of acquiring of a first image of the labware item with at least a first optical recording device ( 150 ), the first image displaying at least a portion of the first optical feature; acquiring a second image of the labware item ( 310, 320, 330, 340, 350 ) with at least a second optical recording device ( 160 ), the second image displaying at least a portion of the second optical feature; and identifying the first optical feature in the first image by using at least a first identification algorithm thereby obtaining first identification data, the first identification data encoding first information on the first optical feature and information indicative of whether at least a further identification is needed, wherein if, according to the information encoded in the first identification data, the at least further identification is not needed, the method further comprises the step of identifying the labware item by using at least the first information on the first optical feature, and wherein if, according to the information encoded in the first identification data, the at least further identification is needed, the method further comprises the steps of identifying the second optical feature in the second image by using at least a second identification algorithm thereby obtaining second identification data, the second identification data encoding information on the second optical feature; and Identifying the labware item ( 310, 320, 330, 340, 350 ) by using at least the information on the second optical feature.

An air cushion pipette comprises at least one seat configured to releasably hold a pipette tip and a displacement apparatus comprising a displacement chamber including a displacement element configured to be displaced therein. A drive apparatus is coupled to the displacement element and configured to displace the displacement element in the displacement chamber. An overstroke apparatus comprises a lower stop and is configured such that a stop element displaces the lower stop downwards when the stop element presses against the lower stop, wherein the downward displacement of the lower stop is limited to a first overstroke. A displaceable overstroke limiting element is configured to enable the displacement of the lower stop downwards by the first overstroke in a release position and limit said displacement to a second overstroke that is shorter than the first overstroke in a blocking position.

The invention relates to a pipette with a body for receiving a displacement device, the displacement device comprising a displacement chamber and a movable boundary element for bounding a pipetting stroke of the pipette. The pipette furthermore has an operating element for setting the pipetting volume of the pipette by movement of the boundary element in the body and for performing a pipetting operation, the operating element being in operative connection with a piston movable in the displacement chamber of the displacement device. The pipette furthermore comprises a counter for displaying the set pipetting volume and a locking mechanism for locking and/or unlocking volume setting by the operating element. It is provided that, on actuation of the operating element, the operating element is configured to perform a pipetting operation, to transfer the locking mechanism into a locked position and to lock adjustment of the pipetting volume.

A centrifuge rotor ( 10 ) includes a closure ( 32 ) between a lower part ( 12 ) of the centrifuge rotor ( 10 ) and a cover ( 14 ). The centrifuge rotor has been improved such that proper single-handed operation is made possible. In particular, the closure ( 32 ) can be closed and detached again using just one hand. The cover ( 14 ) includes a circular cut-out ( 20 ) for fastening the centrifuge rotor ( 10 ) in a centrifuge. The cover ( 14 ) is attached to the lower part ( 12 ) by levers having a concave shaping ( 66 ). The cover ( 14 ) and the levers cooperate to provide a visual indication whether the cover is properly closed.

The invention relates to a measurement apparatus for measuring the concentration of a gaseous substance. The apparatus comprises a light source, a light sensor, and a housing comprising at least one first housing member having a low thermal conductivity. A light path is formed from said light source to said light sensor, wherein the light path passes through a measurement region within said housing. The light source is configured to emit light with a spectral distribution such that said light is absorbed by said gaseous substance. Said light sensor is configured to receive the light emitted by the light source after it has passed through the measurement region. The first housing member comprises a thermal shielding region facing said measurement region on its one side and said light sensor on its other side, and is configured to permit the passage of light.

A method of operating an item of laboratory equipment cooled by means of a flammable refrigerant. The method includes ventilating an interior of the cooled laboratory equipment with the aid of a fan, wherein control of the fan is carried out over a first time period by a first control device; checking, with the aid of a first predefined criterion, whether the ventilation was successful; transferring control of the fan to a second control device if ventilation was successful over the first time period; checking, with the aid of a second predefined criterion, whether the fan is being successfully controlled by the second control device; activating a power supply for at least one further device, which is to be electrically powered, of the cooled laboratory equipment if the fan is being successfully controlled by the second control device. A corresponding item of laboratory equipment is also disclosed.

The disclosure relates to laboratory equipment with flammable refrigerant and connected to at least two different electrical potentials for supplying the equipment with electrical energy. An electrical switch arrangement has first and second switches for electrical separation from, respectively, the first and second potentials. A sequence controller switches on the first switch and thereafter the second switch. A monitoring device is connected via a first contact on the equipment side to the first switch and via a second contact on the mains side to an electrical potential other than the first electrical potential for detecting a switched-on state of the first switch and signaling the detection to the sequence controller. When the monitoring device signals a switched-on state, the sequence controller blocks operation of the equipment as a function of the signaled switched-on state and whether the first switch is expected to be switched on or switched off.

A pipette tip made of plastic with an elongated tubular body with a lower opening at the lower end for the passage of liquid and an upper opening at the upper end for clamping onto an attachment of a pipetting device, wherein a seating region for the attachment is present next to the upper opening on the inner circumference of the tubular body, wherein at least one flattened area extending in the axial direction is present next to the upper opening on the outer circumference of the tubular body, the wall thickness of the tubular body gradually decreases in a cross-section through the tubular body, starting from one of the two regions of the tubular body adjoining the flattened area, in the flattened area towards its central region, and the flattened area has in the cross-section through the tubular body a straight or a less strongly curved profile than the adjoining regions.