A device and method manually opens glass ampules within the device, wherein the device comprises at least a holder with side walls closed at least in sections as a holder of glass ampules, wherein the holder comprises at least one deformable closed side wall and, opposite the deformable side wall, a supporting element is provided. The device further comprises at least a strainer/filter which is arranged below the holder so that the content of the opened glass ampule flows therethrough, a first lever which is pivoted around a first axis in such a manner that it can rotate against the holder, wherein a free end of the first lever can be pressed against the deformable side wall of the holder, a second lever which is pivoted around a second axis in such a manner that it can be rotated against the holder. The second axis divides the second lever into a short lever arm and a long lever arm, wherein one end of the short lever arm should be pressed through manual operation of the long lever arm against the first lever in such a manner that the free end of the first lever presses against the deformable side wall and deforms said wall in such a manner that a glass ampule should be broken open by the pressure of the free end of the first lever.
