Abstract: Apparatus for the generation of carbon dioxide by the reaction of an edible acid and a carbon dioxide-releasing substance in aqueous solution. The gas is generated in a generator chamber and is injected into water contained in an absorber tank to carbonate the water and also to provide pressure for expulsion of the carbonated water from the apparatus.

Abstract: An imparter to impart silver to a water system wherein air is drawn into a receiver container when water is withdrawn from the receiver container into a storage container. The water is withdrawn from the receiver container through an opening that is disposed below the level of water in the receiver container and its lower end is beneath a maximum water elevation in the storage container and above some lower elevation therein. The imparter is placed in the opening. It has a dimension of thickness defined by a pair of end walls which partially define a cavity in the imparter body. There are perforations in both of the end walls to permit water to flow through the cavity and thereby through a bed of silver imparting material inside the cavity. This material has the inherent property of transferring silver into the water as a consequence of contact therewith.