Chemical Engineering Communications provides a forum for the rapid publication of papers in all areas of chemical engineering. Full length papers, reviews and short communications are welcome, on subjects such as experimentation (both techniques and data), new theoretical models, commentaries on and discussion of previously published work and letters to the editor. Since the emphasis is on original work in progress, the editors also encourage submission of accounts of tentative results, provided they are well documented. Every effort will be made to ensure rapid publication. Papers which are accepted will be evaluated by the editors and referees on the basis of quality and originality of the work as well as the style and presentation of the paper.