Abstract: A microporous membrane for flash distillation comprising at least three layers having distinct properties is disclosed. Generally, the membranes contain outer layers of relatively small pore size, with an interior layer with relatively large pore size. The invention is also directed to a system for desalinization comprising a source of hot brine.

Abstract: A particulate filter particularly suited for analytical gravimetric weighing applications is disclosed. The particulate filter includes a polytetrafluoroethylene (PTFE) media supported by a ring and yields stable microgram and submicrogram weighing results. The support ring may be PTFE, metal foil, or another non-hygroscopic polymer such that the mass of the filter does not vary with changes in atmospheric moisture. The filter simplifies the discharge of electrostatic charge buildup such that when a conductive filter media is combined with a conductive ring device, the discharge may be accomplished by placing the filter on a grounded weighing pan or other surface. The particulate filter can simplify filter identification by including identification symbols imprinted on each side of the filter media.

Abstract: A microporous membrane for flash distillation comprising at least three layers having distinct properties is disclosed. Generally, the membranes contain outer layers of relatively small pore size, with an interior layer with relatively large pore size. The invention is also directed to a system for desalinization comprising a source of hot brine.

Abstract: The present invention is directed to a filter for placement over a breather opening of an enclosure, such as a headlamp. The filter includes an elastomeric body having a primary channel extending from a first end to a second end of the elastomeric body, and a plurality of secondary channels extending from the first end to the second end of the elastomeric body. A cap is configured to at least partially cover the elastomeric body, the cap having an interior surface and an exterior surface. Filter material is arranged in fluid communication with the primary and secondary channels, the filter material configured to filter air flowing through the primary and secondary channels.

Abstract: A particulate filter particularly suited for analytical gravimetric weighing applications is disclosed. The particulate filter includes a polytetrafluoroethylene (PTFE) media supported by a ring and yields stable microgram and submicrogram weighing results. The support ring may be PTFE, metal foil, or another non-hygroscopic polymer such that the mass of the filter does not vary with changes in atmospheric moisture. The filter simplifies the discharge of electrostatic charge buildup such that when a conductive filter media is combined with a conductive ring device, the discharge may be accomplished by placing the filter on a grounded weighing pan or other surface. The particulate filter can simplify filter identification by including identification symbols imprinted on each side of the filter media.