Air Liquide is the global leader in advanced technology methods to purify and produce gases for a wide range of applications. 
, L.P. (MEmbrane Systems DuPont Air Liquide), originally a joint venture begun in 1988 between Air Liquide and DuPont, has been a wholly owned subsidiary of Air Liquide since 1992. is located in Newport, Delaware, USA.
Based on DuPont's polymeric fiber spinning technology, Air Liquide/ has developed and commercialized the most advanced gas separation membranes available to industry. manufactures hollow fiber membranes for air separation/nitrogen generation, carbon dioxide removal and hydrogen purification.
In addition to being an ISO 9001-2000 certified manufacturer of gas separation membranes, is one of Air Liquide's seven research and development centers. Air Liquide/ is committed to research and development in the area of gas separation. In 2000, was awarded a grant from N.I.S.T. (U.S. Government National Institute of Standards and Technology) for research on mixed matrix gas separation membranes. Furthermore, maintains strong ties to leading Universities in membrane research.
Membrane based nitrogen applications include oil and gas drilling, controlled atmosphere, maritime transport, inerting, beverage dispensing, tire inflation, and laboratory gas supply. 's hydrogen membranes are used in refineries and petrochemical plants for hydrogen recovery, hydrogen/ carbon monoxide ratio adjustment and olefin recovery. Carbon dioxide removal membranes process natural gas (sweetening), biogas/landfill gas and synthetic natural gas to enhance the value of the feed gas.
Over the last decade gas separation via membrane has become a proven technology. Heading into the future, Air Liquide/ will continue to be at the forefront of membrane based gas separation solutions.
