porous membrane

https://doi.org/10.1351/goldbook.10288

Membrane in which permeation occurs through its porous structure.

See also: non-porous membrane
Source:
PAC, 2016, 88, 517. 'Glossary of terms used in extraction (IUPAC Recommendations 2016)' on page 551 (https://doi.org/10.1515/pac-2015-0903)