Abstract: A container and method for forming a palatable carbonated ice under pressure, includes a container having an outer wall with a lower end enclosed by a bottom wall and an upper end enclosed by a top wall to form an internal chamber. A water based fluid having sugar, such as a diet sweetener, and CO2 is located within the internal chamber. A portion of headspace between the water based fluid and the top wall sized to permit expansion of the water based fluid during freezing without rupturing the container. The container having a rupture strength greater than a conventional pop can of about 105 pounds per square inch. The top wall includes a removable portion that provides an opening to the internal chamber to facilitate the removal of palatable ice from the internal chamber, where the removable portion covers at least a majority of the surface of the top wall.

Abstract: A replaceable cartridge for a diffusion device for a volatilizable substance includes a primary control of diffusion rate of the substance into the surrounding atmosphere. The cartridge includes a base and a cover, and a membrane separating the cartridge into two chambers. The membrane has characteristics for controlling the rate of passage of a vaporized form of the substance from a first chamber, wherein the substance is stored, to a second chamber. A vent structure in the cover provides control over diffusion of the vaporized substance to the atmosphere. The diffusion device may include a heater or other catalyst device for imparting energy to the cartridge, thereby to volatilize the substance, and a timing circuit for control of heater operation. Additionally, the device may include a structure to assist proper placement of the cartridge adjacent the catalyst device by sensing at least a partial insertion of the cartridge and by automatically completing the insertion and positioning process thereof.