Permeant Interface Device


The Durham Geo Permeant Interface Device is used in permeability testing when a corrosive fluid is used as the permeant. It is installed between the Permeability Cell and the S-500 Panel. It incorporates a flexible bladder to prevent the permeant from entering the Panel or escaping into the atmosphere.

It eliminates the possibility of compressed air dissolving into the permeant.


All liquid contacting parts are made from 316 stainless steel, Teflon® or the interface bladder membrane. The Device is supplied with both a Buna-N and Viton Membrane. The internal cylinder has a diameter of 2 in (51 mm).

Permeant Interface Device
S-470Permeant Interface Device with 2 membranes