Abstract: A sample delivery system for liquid chromatography is provided. The sample delivery system includes: a sample receptacle; a sample aspiration cannula for aspirating a sample located in the sample receptacle, the sample aspiration cannula being directed using a drive in a direction towards the sample receptacle so that a tip at a distal end of the sample aspiration cannula is immersed in the sample; and a guide element for the sample aspiration cannula provided above the sample receptacle, the guide element being designed as a washing device. The sample aspiration cannula can be retracted using the drive at least so far from the sample receptacle such that the distal end of the sample aspiration cannula may be cleaned in the washing device.

Abstract: A sample delivery system for liquid chromatography is provided. The sample delivery system includes: a sample receptacle; a sample aspiration cannula for aspirating a sample located in the sample receptacle, the sample aspiration cannula being directed using a drive in a direction towards the sample receptacle so that a tip at a distal end of the sample aspiration cannula is immersed in the sample; and a guide element for the sample aspiration cannula provided above the sample receptacle, the guide element being designed as a washing device. The sample aspiration cannula can be retracted using the drive at least so far from the sample receptacle such that the distal end of the sample aspiration cannula may be cleaned in the washing device.

Abstract: A device for collecting a sample and for depositing the sample in a sample-receiving port of a measuring apparatus comprises a first connection element (8) with three connections for fluid, and a second connection element (7), and a hollow needle (5) for collecting and depositing the sample. A first feed line (9) for a first washing liquid is connected via a first pump to a first connection for fluid of the first connection element (8). A second feed line (10) for a second washing liquid is connected via a second pump to a second connection for fluid of the first connection element (8). A connection for fluid of the second connection element (7) is connected to the third connection for fluid of the first connection element (8), and the second connection element (7) is connected to a dosing device (1) and to the hollow needle (5). A valve (2) is arranged between the third connection for fluid of the first connection element (8) and the second connection element (7).

Abstract: A device for collecting a sample and for depositing the sample in a sample-receiving port of a measuring apparatus comprises a first connection element (8) with three connections for fluid, and a second connection element (7), and a hollow needle (5) for collecting and depositing the sample. A first feed line (9) for a first washing liquid is connected via a first pump to a first connection for fluid of the first connection element (8). A second feed line (10) for a second washing liquid is connected via a second pump to a second connection for fluid of the first connection element (8). A connection for fluid of the second connection element (7) is connected to the third connection for fluid of the first connection element (8), and the second connection element (7) is connected to a dosing device (1) and to the hollow needle (5). A valve (2) is arranged between the third connection for fluid of the first connection element (8) and the second connection element (7).

Abstract: A device for collecting a sample and for depositing the sample in a sample-receiving port of a measuring apparatus comprises a first connection element (8) with three connections for fluid, and a second connection element (7), and a hollow needle (5) for collecting and depositing the sample. A first feed line (9) for a first washing liquid is connected via a first pump to a first connection for fluid of the first connection element (8). A second feed line (10) for a second washing liquid is connected via a second pump to a second connection for fluid of the first connection element (8). A connection for fluid of the second connection element (7) is connected to the third connection for fluid of the first connection element (8), and the second connection element (7) is connected to a dosing device (1) and to the hollow needle (5). A valve (2) is arranged between the third connection for fluid of the first connection element (8) and the second connection element (7).

Abstract: The rotating valve for high performance liquid chromatography (HPLC) has a stator with connections for the solvent reservoirs, pumps, chromatography columns etc. and a disc-shaped rotor with connecting grooves on the front face for selectively connecting different connections to one another. Said grooves are evenly distributed on two concentrical circles. The connecting grooves on the front face of the rotor are configured in the form of circular segments and are arranged in such a way that fife connections are simultaneously connected to one another in defined positions of the rotor in each circle.

Abstract: The invention relates to a system that feeds gaseous or liquid media into moveable sample vessels or reaction vessels in vacuum centrifuges or reaction chambers that are provided with an integrated shaker. An adapter plate fitted with needles that are allocated to individual vessels is arranged inside the centrifuge or reaction chamber above the sample vessels. The adapter plate is provided with a system for the introduction of the gaseous or liquid medium. The height of the adapter plate can be adjusted. This enables the depth at which the needles are introduced into the sample vessels to be chosen at will.