A receptacle holder (1)—consisting of a U-shaped base part (5) and a holder part (6) that closes the opening of the U-shaped base part, whereby the holder part (6) comprises a magnet, with a receptacle (2) with up to 50 ml fill level, consisting of a vial (3) and a closing part (4), wherein, a ferrous metal is arranged in the closing part (4) and the receptacle (2) is arrangeable on the first side (7) of the holder part (6) that faces towards the U-shaped base part.