Abstract: A portable filtration assembly includes a housing containing a water inlet port and a water outlet port and a sub-micron filter disposed in the housing having hydrophilic sub-micron rated membrane filter elements. The sub-micron filter is configured to effect a six log reduction of bacteria (99.9999%) and a four log reduction of protozoa (99.99%) at a flow rate between 10-30 mL/sec requiring a pressure of 1.5-10 psi. The assembly also includes structure for venting air through the hydrophilic sub-micron rated membrane filter elements. The assembly may additionally include a monolithic radial flow carbon composite filter also disposed in the housing. The monolithic radial flow carbon composite filter is configured for removing at least 80% of chlorine and at least 90% of lead over a minimum of forty gallons at a flow rate of 10 mL/sec at a pressure drop of 10 psi or less.

Abstract: A simple yet effective method and apparatus produce a web suitable for treatment of water as a static filtration media, e.g. to remove chlorine and lead from water in contact with the media. A web is coated with a coating composition that facilitates treatment of water and includes a binder, and the web is compressed in one dimension about 25-75% (e.g. 40-60%) so as to make the void size distribution substantially more uniform. The compression is substantially maintained until the binder substantially cures so that the coated final web produced has a second void size distribution more uniform than the first void size distribution, e.g. the coated final web having void volumes with a mean value of about 6-7×10−8 liters and/or an RDV/BV ratio of at least 0.4, and a porosity of greater than 90%.

Abstract: A simple yet effective method and apparatus produce a web suitable for treatment of water as a static filtration media, e. g. to remove chlorine and lead from water in contact with the media. A web is coated with a coating composition that facilitates treatment of water and includes a binder, and the web is compressed in one dimension about 25-75% (e. g. 40-60%) so as to make the void size distribution substantially more uniform. The compression is substantially maintained until the binder substantially cures so that the coated final web produced has a second void size distribution more uniform than the first void size distribution, e. g. the coated final web having void volumes with a mean value of about 6-7×10−8 liters and/or an RDV/BV ratio of at least 0.4, and a porosity of greater than 90%.

Abstract: An enhanced static filtration media may comprise a mat body comprising a non-woven of fibers that comply with 21 CFR 177.2260, and having a weight of about 4-7 oz./sq. ft.; a coating on the mat comprising about 100%-200% of the weight of the mat, and including, by weight, about 60-85% activated carbon, about 10-20% binder, and about 0-25% zeolite; and the media mat having an RDV/BV ratio of greater than about 0.4, and a porosity of greater than 90%. Various pitcher constructions make optimal use of the media. In some pitchers, the level of filtered water is easily viewed from the outside while the media is not visible from the outside.