penetrant (permeant)

https://doi.org/10.1351/goldbook.PT06879
Entity from a phase in contact with one of the @[email protected] surfaces that passes though the @[email protected]
Source:
PAC, 1996, 68, 1479. (Terminology for membranes and membrane processes (IUPAC Recommendations 1996)) on page 1484 [Terms] [Paper]