An assembly (10) including a container (12) having a first end (14) and an opposing second end (16). The assembly (10) also includes a housing (18) for removably receiving a cartridge (20) of the type including a substance storage compartment (22) for storing a substance therein. The housing (18) is connectable to the second end (16) of the container (12). When connected to the container (12), the housing (18) is movable relative to the container (12). A rupturing device (24) is provided for rupturing the storage compartment (22) upon relative movement between the housing (18) and container (12), so as to combine any storage compartment contents with any container contents. The rupturing device (24) is mounted within the container (12). A container opening (26) is provided in the first end (14) of the container (12); and a closure (28) provided for sealing the container opening (26). The closure (28) is movable between a closed position, and an open position for providing access to the container (12).