The Capillary Flow Porometer PSM 165 provides a means of mercury free and non-destructive characterising of porous materials with regard to their pore size distribution (membranes, ceramics, nonwovens, sinter metalls, ...) on basis of ASTM D6767, ASTM F316-03, ISO 2942, ISO 4003. The test is conveniently supported by a PC with user-friendly control software PSMWin.