A stopper for containers for use in analyses.

摘要

A stopper for containers for use in analyses comprising a resilient body (1) having an axial cavity (5) closed by a perforatable transverse wall (2) provided with slits (3) defining segments (4), said slits (3) allowing for the opening of the stopper when a tubular member (9) is inserted in the cavity (5) and closing thereof when the segments (4) return to the initial position thereof. The cavity is provided with a plurality of longitudinal ribs (6) adapted for defining passages (10) for air between the body (1) and the tubular member (9). The stopper may slide within the container.