Synopsis: The theme and focus of this workshop will be on technology barriers -- "What are the critical barriers and technology hurdles to wider application of membranes?" The cross-disciplinary and/or inter-disciplinary effort, which is required to make progress in new and emerging areas of membrane technology, will be a sub-theme. A panel, composed of 9-10 experts, carefully chosen to represent the broad membrane technology community, and roughly equally divided between industrial scientists and academics, is providing a clear agenda of issues to be discussed at the workshop. Questions, topical issues from the broad membrane technology community are encouraged and should be directed to one of the workshop organizers. Several invited talks precede the panel discussion. Areas of membrane technology represented include polymeric and composite membranes for gas separations, ceramic membranes, polymeric membrane systems for liquid separations, liquid membranes, membranes for biomedical devices and for industrial biotechnology. An edited, distilled proceedings is planned &endash; a draft report will be available by early January, 2000; the final report will be published soon after that and willbe made widely available.