Abstract: A perforable container cap having a top surface that includes a central aperture covered by a membrane that is thin, relative to the thickness of the rest of the cap structure, and, therefore, relatively easy to pierce or puncture with a sampling tube or needle. Embodiments of the container cap may include a membrane comprising a thin plastic, rubber or foil.
Abstract: A perforable container cap that reseals after puncture by a sampling tube or needle. Embodiments of the container cap may include a container cap locking mechanism having a barb and adjacent stop both projecting downward from a cap edge to mesh with a V-shaped block projecting outward from a container sidewall.
Abstract: A container cap locking mechanism includes a barb and adjacent stop both projecting downward from a cap edge to mesh with a V-shaped block projecting outward from a container sidewall.
Abstract: A container cap locking mechanism includes a barb and adjacent stop both projecting downward from a cap edge to mesh with a V-shaped block projecting outward from a container sidewall.