A container (10) for mixing components, the container including a main body (12) defining a main chamber (17), a liquid receptacle (16), and a plunger (18). The main chamber has a distal end (26) which has an end cap (28). The main chamber also includes a central aperture (30) sealed by a frangible membrane (38). In use, the plunger causes liquid in the liquid receptacle to be pushed through an internal wall (22), having a weakened portion (24) therein, into the main chamber to mix the liquid with a powder contained in the main chamber. The liquid and powder are mixed to form a paste that is accessed by an applicator which is used to break the frangible membrane (38). The paste is preferably of the type used in dentistry.