I believe this question is best answered by objects conservators on the Cons DistList; see below Mail submissions to [log in to unmask] Administrative matters (file requests, subscription requests, etc) to [log in to unmask] DistList Archives: All instances of the DistList are available (both for browsing by whole items and searching for individual messages): http://palimpsest.stanford.edu/ The ConsDir is available at the same site. I believe there is literature in the CoOL archive on this subject. If the Lucite box is an art object, then I would have a conservator look at it. There may be components that should not be cleaned. To learn how to select a Conservator and obtain a referral contact AIC at URL: <http://palimpsest.stanford.edu/aic/>. If it is a vitrine, then try cleaning with Brillianize (sp?), a product that can be bought through museum and conservation suppliers or through your local Plexiglas supply store such as Cadillac Plastics or Tap Plastics. Timothy Vitale Paper and Photograph Conservator & Preservation Consultant