A container (10) has a base (12) on a cap (14). The container (10) has a chamber (38) for liquid. The base (12) on the cap (14) are arranged to be interengaged so as to seal hermetically the chamber (38). The base (12) and the cap (14) have multi-sided portions which interengaged to form the hermetic seal. The cap (14) has outwardly flared sides so that as the cap (14) is rotated relative to the base (12) the cap is caused to move out of the base and the hermetic seal is broken so that the contents of the chamber (38) may be accessed.