pore sizes: 0.1μm, 0.22μm, 0.45μm, 0.8μm, 3.0μm, 5.0μm Design Color coding for Chrompure, Superpure, Allpure III and Bepure series. Marked with identifying code to denote pore size, membrane material Sterile options by Gamma radiation and individually packaged Toll free: 866-528-4572 Fax: 1-732-412-4040