Patent ID: 7008537

Claim:
A gravity-flow filtration system for treating, storing, and dispensing fluids comprising: a first reservoir for holding a fluid to be filtered; a filter medium in fluid communication with said first reservoir, said filter medium comprising a microporous structure having a microbiological interception enhancing agent comprising a cationic metal complex capable of imparting a positive charge on at least a portion of said microporous structure, said cationic metal complex is formed as the precipitate of a cationic material having a counter ion associated therewith and a biologically active metal: said filter medium with a mean flow path of less than about 1 micron, and wherein said filter medium is so treated as to provide at least about 4 log reduction of microbiological contaminants smaller than the mean flow path of said filter medium; and a second reservoir in fluid communication with said filter medium for collecting a filtered fluid.