Ploytetrafluoroethylene (PTFE) membrane discs are used for a variety of filtration applications, including biochemistry, microelectronic, lab material and etc. It can effectively filtrate micro organism and other particulates. PTFE also has high temperature resistance and wide chemical compatibility. Its highly porous membrane filter is used to sterilize gasses, vent gas from aqueous solutions, or sterilize or clarify aggressive chemicals. Insert to most aggressive solvents. strong acids, alcohols, bases and aromatics.