Abstract: An arrangement for the manual breaking of ampoules comprising a base part (1) so arranged as to maintain in position one end of an ampoule, and projecting upwards from the base part a side support part (2) so arranged as to provide lateral support for the ampoule (16). The supporting part exhibits two finger support surfaces for the fingers of a user. These finger support surfaces extend to either side of the other end (18) of the ampoule, so that this projects partly into a space (6) between the finger support surfaces. Before the moment of breaking, the other end of the ampoule thus projects slightly beyond the connecting line between the aforementioned finger support surfaces. At the moment of breaking, the broken-off end is introduced into the aforementioned space by the fingers of the user being squeezed together with the side supporting part and the head of the ampoule in between.