Abstract: An actuator arrangement configured to be controlled by a control unit and to control a flow control arrangement includes a housing, a first valve stem configured to be connected to and control movement of a first valve member of the flow control arrangement, a second valve stem configured to be connected to and control movement of a second valve member of the flow control arrangement, a first electrical motor comprising a first rotor and a first stator, the first rotor being rotatable about the longitudinal axis, a second electrical motor comprising a second rotor and a second stator, the second rotor being rotatable about the longitudinal axis, wherein the first rotor is configured to provide a first movement of the first valve stem and the second rotor is configured to provide a first movement of the second valve stem. A method for moving the first valve stem is also disclosed.

Abstract: An installation device is for installing a sample separating device for separating a liquid sample in a sample separating tool. The installation device includes a first fluid connection for fluidically connecting to a first fluid connection point of the sample separating device, and an actuation device that can be actuated by a user for converting between an access position and a fluid coupling position. The access position makes the sample separating device accessible to the user, and the fluid coupling position fluidically couples the sample separating device. The installation device also includes a fluid coupling mechanism, which forms a force-loaded fluidic connection between the first fluid connection and the first fluid connection point when the sample separating device is converted into the fluid coupling position by the actuation device. The sample separating device may, for example, be configured for chromatography.

Abstract: An actuator arrangement configured to be controlled by a control unit and to control a flow control arrangement includes a housing, a first valve stem configured to be connected to and control movement of a first valve member of the flow control arrangement, a second valve stem configured to be connected to and control movement of a second valve member of the flow control arrangement, a first electrical motor comprising a first rotor and a first stator, the first rotor being rotatable about the longitudinal axis, a second electrical motor comprising a second rotor and a second stator, the second rotor being rotatable about the longitudinal axis, wherein the first rotor is configured to provide a first movement of the first valve stem and the second rotor is configured to provide a first movement of the second valve stem. A method for moving the first valve stem is also disclosed.

Abstract: A solvent supply system supplies solvent for one or more chromatographic separation systems each including one or more input channels. Each input channel is configured for fluidically coupling with a respective solvent container for supplying the respective input channel with a respective solvent from the respective solvent container. The solvent supply system includes a solvent identification unit configured for providing a channel identification for identifying a specific solvent container to supply a specific input channel of a specific chromatographic separation system, and for assigning the channel identification to the specific solvent container.

Abstract: An installation device is for installing a sample separating device for separating a liquid sample in a sample separating tool. The installation device includes a first fluid connection for fluidically connecting to a first fluid connection point of the sample separating device, and an actuation device that can be actuated by a user for converting between an access position and a fluid coupling position. The access position makes the sample separating device accessible to the user, and the fluid coupling position fluidically couples the sample separating device. The installation device also includes a fluid coupling mechanism, which forms a force-loaded fluidic connection between the first fluid connection and the first fluid connection point when the sample separating device is converted into the fluid coupling position by the actuation device. The sample separating device may, for example, be configured for chromatography.