Effect of distorting a membrane

21 June 2021

One of the last checks of PoreXpert v2 build 700, due at the end of June, has been to try it on filters and membranes.  Here is an extract from a pre-formatted pdf report of the test, available in 6 different languages, showing a distortion giving rise to a reduction to 80% of original size of all voids above 0.88 μm within a membrane, characterised by a Porolux 1000 porometer.  As a result of the distortion, the absolute permeability reduces from 0.702 mD for air at 25 °C and 1 atm pressure to 0.292 mD for water at 25 °C.