Sample delivery system, in particular for liquid chromatography, comprising a. a sample receptacle for storing or stockpiling a liquid sample, b. a sample aspiration cannula for aspirating a sample located in the sample receptacle, which sample aspiration cannula can be directed towards the sample receptacle by means of a drive, so that a distal end, in particular a tip, of the sample aspiration cannula is immersed in the sample, c. a guide (4, 5, 6) for the sample aspiration cannula, which i. forms a washing chamber having a first cavity and a second cavity and comprising an inlet opening and an outlet opening for the sample aspiration cannula, each forming a guide channel for the sample aspiration cannula, and ii. a guide element for the sample aspiration cannula provided above the sample receptacle, which is formed as a washing device in an interior of the washing chamber, wherein iii. the first cavity and the second cavity are connected to each other exclusively by the guide element, and iv. the guide element is designed in such a way that it has a cup-shaped section with a diameter which is at least twice an outer diameter of the sample aspiration cannula, through which section the sample aspiration cannula is guided and can be acted upon by washing solvent, d. the sample aspiration cannula can be retracted from the sample holder by means of the drive at least to such an extent that the distal end of the sample aspiration cannula can be cleaned in the washing device. a. a sample receptacle for storing or stockpiling a liquid sample, b. a sample aspiration cannula for aspirating a sample located in the sample receptacle, which sample aspiration cannula can be directed towards the sample receptacle by means of a drive, so that a distal end, in particular a tip, of the sample aspiration cannula is immersed in the sample, c. a guide (4, 5, 6) for the sample aspiration cannula, which i. forms a washing chamber having a first cavity and a second cavity and comprising an inlet opening and an outlet opening for the sample aspiration cannula, each forming a guide channel for the sample aspiration cannula, and ii. a guide element for the sample aspiration cannula provided above the sample receptacle, which is formed as a washing device in an interior of the washing chamber, wherein iii. the first cavity and the second cavity are connected to each other exclusively by the guide element, and iv. the guide element is designed in such a way that it has a cup-shaped section with a diameter which is at least twice an outer diameter of the sample aspiration cannula, through which section the sample aspiration cannula is guided and can be acted upon by washing solvent, i. forms a washing chamber having a first cavity and a second cavity and comprising an inlet opening and an outlet opening for the sample aspiration cannula, each forming a guide channel for the sample aspiration cannula, and ii. a guide element for the sample aspiration cannula provided above the sample receptacle, which is formed as a washing device in an interior of the washing chamber, wherein iii. the first cavity and the second cavity are connected to each other exclusively by the guide element, and iv. the guide element is designed in such a way that it has a cup-shaped section with a diameter which is at least twice an outer diameter of the sample aspiration cannula, through which section the sample aspiration cannula is guided and can be acted upon by washing solvent, d. the sample aspiration cannula can be retracted from the sample holder by means of the drive at least to such an extent that the distal end of the sample aspiration cannula can be cleaned in the washing device.