The present invention provides centrifuges (e.g., analytical centrifuges) comprising a cooling assembly having a cooling surface disposed inside the centrifuge chamber and spaced apart from the rotor. The cooling surface disposed inside the centrifuge chamber, spaced apart from the rotor, and configured to exchange heat between the cooling assembly and the rotor, the thermal element thermally coupled to the cooling surface, and configured to control the temperature of the cooling surface.

The present invention provides centrifuges (e.g., analytical centrifuges) comprising a cooling assembly having a cooling surface disposed inside the centrifuge chamber and spaced apart from the rotor. The cooling surface disposed inside the centrifuge chamber, spaced apart from the rotor, and configured to exchange heat between the cooling assembly and the rotor, the thermal element thermally coupled to the cooling surface, and configured to control the temperature of the cooling surface.

The application relates to a cooling system, the cooling system having: an evaporator, a first compressor, a second compressor, a cooling component, an expansion device and a line system that connects the evaporator, the first compressor, the second compressor, the cooling component and the expansion device to one another. The cooling system includes a refrigerant, wherein the refrigerant comprises carbon dioxide. The first compressor and the second compressor are arranged in series with one another. The application also relates to a corresponding laboratory instrument.

The application relates to a cooling system, the cooling system having: an evaporator, a first compressor, a second compressor, a cooling component, an expansion device and a line system that connects the evaporator, the first compressor, the second compressor, the cooling component and the expansion device to one another. The cooling system includes a refrigerant, wherein the refrigerant comprises carbon dioxide. The first compressor and the second compressor are arranged in series with one another. The application also relates to a corresponding laboratory instrument.

A centrifuge, in particular a separator, includes a rotatable centrifuge drum with a vertical axis of rotation and a non-rotatable fixed housing with a hood and preferably a solids collector. In the centrifuge, the housing, in particular the fixed hood and/or at least one other part of the housing, have at least one first inner wall and a first outer wall which delimit a first cavity. The cavity is at least partly filled with damping/insulation agents that are solid at a process or ambient temperature. A coolant that has a fluid form at a process and/or ambient temperature can be introduced into the first cavity filled with the solid damping/insulation agents.

A centrifuge, in particular a separator, includes a rotatable centrifuge drum with a vertical axis of rotation and a non-rotatable fixed housing with a hood and preferably a solids collector. In the centrifuge, the housing, in particular the fixed hood and/or at least one other part of the housing, have at least one first inner wall and a first outer wall which delimit a first cavity. The cavity is at least partly filled with damping/insulation agents that are solid at a process or ambient temperature. A coolant that has a fluid form at a process and/or ambient temperature can be introduced into the first cavity filled with the solid damping/insulation agents.

A centrifuge includes a chamber configured to contain a set of one or more samples, an image sensor configured to generate image data, and processing circuitry. The processing circuitry is configured to: initiate centrifugation of the set of samples about a central axis; obtain a set of image data generated by the image sensor during centrifugation of the set of samples; and for each respective sample of the set of samples, apply a machine learning model configured to generate, based on image data representative of the respective sample in the set of image data, a viability score for the respective sample; determine whether the viability score for the respective sample satisfies a viability condition; and output whether the viability score for the respective sample satisfies the viability condition.

A centrifuge includes a chamber configured to contain a set of one or more samples, an image sensor configured to generate image data, and processing circuitry. The processing circuitry is configured to: initiate centrifugation of the set of samples about a central axis; obtain a set of image data generated by the image sensor during centrifugation of the set of samples; and for each respective sample of the set of samples, apply a machine learning model configured to generate, based on image data representative of the respective sample in the set of image data, a viability score for the respective sample; determine whether the viability score for the respective sample satisfies a viability condition; and output whether the viability score for the respective sample satisfies the viability condition.

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.

A centrifugal field-flow fractionation device capable of improving analysis performance and shortening analysis time is provided. A first channel 111 communicating with a channel member is formed on a rotational shaft 11 that rotates together with a rotor. A second channel 644 communicating with the first channel 111 is formed on a fixing portion 60 fixed in a state of facing the rotational shaft 11 along a rotational axis L. A mechanical seal 66 having a pair of seal rings 661 and 662 that come into contact with each other and a biasing member 663 is provided to attach one seal ring 661 to the rotational shaft 11 and the other seal ring 662 to the fixing portion 60. The biasing member 663 biases the pair of seal rings 661 and 662 in a direction in which the pair of seal rings come in contact with each other. Since the rotational shaft 11 can be rotated at a high speed and the liquid sample can be fed at a high pressure, the analysis performance can be improved and the analysis time can be shortened.