A two day symposium and exhibition reviewing the field of preparative separation science and its application to the purification of potential drugs. From nano-scale laboratory isolations to industrial process scale production, this conference will attract leading scientists to present and discuss the latest developments in these important areas of science and technology. This symposium is the fifth in a popular series that will take place on 17th and 18th September 2009 at the prestigious GlaxoSmithKline Medicines Research Centre at Stevenage, UK.