Dear all, Sorry for non-crystallography related questions. I am looking for a Tangential Flow Filtration device to concentrate large volumes of media (several liters) for protein purification. I am wondering whether I could get some suggestions on my choices. It appears that both Pall and Millipore carry this kind of products. I would really like to get some information on the pros/cons of different models. Any kind feedback will be highly appreciated. Best regards, Junyu ----------------------------------------------------------- Junyu Xiao, Ph.D. University of California, San Diego Leichtag Room 283 9500 Gilman Drive, 0721 La Jolla, CA 92093-0721 Lab phone: 858-822-0684 ------------------------------------------------------------