This year's World Filtration Congress (WFC) — The eighth in the series to be held so far — took place in Brighton, UK on 3–7 April 2000. It devoted more than four sessions to membrane technology, covering all major areas of research and development. In last month's issue of Membrane Technology we grouped together three presentations which looked at the way in which membrane technology can be used to treat drinking water, highly contaminated industrial waste-water, and liquid agricultural residues. This article ties together a further three presentations from the conference, which cover nanofiltration and reverse osmosis research.