Patent ID: 7712613

Claim:
A filter for providing potable water, comprising: (i) a housing having an inlet and an outlet; and (ii) a filter material disposed within said housing, said filter material comprising (a) from about 25% to about 75%, by weight, of a plurality of filter particles comprising microporous activated carbon, wherein the sum of the mesopore and macropore volumes of said filter particles is less than 0.12 mL/g, and wherein mesopore means an intra-particle pore having a diameter between 2 nm and 50 nm, and macropore means an intra-particle pore having a diameter greater than 50 nm, and (b) from about 25% to about 75%, by weight, of a plurality of filter particles comprising mesoporous activated carbon, wherein: the sum of the mesopore and macropore volumes of said mesoporous filter particles is between about 0.2 mL/g and about 2 mL/g, wherein mesopore means an intra-particles pore having a diameter between 2 nm and 50 nm, and macropore means an intra-particle pore having a diameter greater than 50 nm, and the total pore volume of said mesoporous filter particles is greater than about 0.4 mL/g and less than about 3 mL/g; (iii) wherein the filter has a Filter Bacteria Log Removal of greater than about 2 logs and a Filter Viruses Log Removal of greater than 1 log.