The fixed ring models are open to the atmosphere, which permits the saturation of the sample, whereas in the permeability cell models, the sample and the saturating water are sealed from the atmosphere. Complete with reservoir, hose connection, upper and lower porous discs, pressure pad and stainless steel sample cutting collar.

The fixed ring models are open to the atmosphere, which permits the saturation of the sample, whereas in the permeability cell models, the sample and the saturating water are sealed from the atmosphere. Complete with reservoir, hose connection, upper and lower porous discs, pressure pad and stainless steel sample cutting collar.