Abstract: Sample changer with a balance, with at least two sample carriers which can be delivered to the balance and which are located in a sample rack, the sample carrier being made and arranged in the sample rack relative to the balance such that the sample carrier can be conveyed onto a weighing surface of the balance by rotation and/or shifting of the sample rack and/or the balance. Preferably, the balance is integrated in the sample changer.

Abstract: A volume measurement and/or metering device includes a cylinder/piston and cock system for sucking in and/or discharging liquids in a defined way, the piston being movable in relation to the cylinder for sucking in or discharging the liquid. The cylinder is mounted, together with the cylinder bottom, rotatably with respect to the cock system about an axis of rotation parallel to the cylinder longitudinal axis. The cylinder bottom bears with a sealing seat against a cock element of the cock system, the cock element having at least one duct orifice. These orifices are arranged in such a way that the at least one orifice in the cylinder bottom can be brought into congruence with the orifices of the cock element when the cylinder and the cylinder bottom are rotated. Further, the cock element is brought into a sealing closing position for simultaneously closing of all the orifices of the cylinder bottom are provided.

Abstract: A volume measurement and/or metering device includes a cylinder/piston and cock system for sucking in and/or discharging liquids in a defined way, the piston being movable in relation to the cylinder for sucking in or discharging the liquid. The cylinder is mounted, together with the cylinder bottom, rotatably with respect to the cock system about an axis of rotation parallel to the cylinder longitudinal axis. The cylinder bottom bears with a sealing seat against a cock element of the cock system, the cock element having at least one duct orifice. These orifices are arranged in such a way that the at least one orifice in the cylinder bottom can be brought into congruence with the orifices of the cock element when the cylinder and the cylinder bottom are rotated. Further, means for simultaneously closing of all the orifices of the cylinder bottom are provided.

Abstract: Sample changer with a balance, with at least two sample carriers which can be delivered to the balance and which are located in a sample rack, the sample carrier being made and arranged in the sample rack relative to the balance such that the sample carrier can be conveyed onto a weighing surface of the balance by rotation and/or shifting of the sample rack and/or the balance. Preferably, the balance is integrated in the sample changer.

Abstract: The invention relates to a container 1 for pourable materials, in particular powdered materials M, for use on a robot arm R, with a conveying device 3 in a cylindrical housing 2, the cylindrical housing 2 being formed as a receiving space for the material M, in which the conveying device 3 is arranged in such a way that it can be driven in both directions transversely in relation to the longitudinal axis of the conveying device for receiving and discharging the material M.