Fluid permeanceUnits Type ⤴

Permeance is closely related to permeability, but it refers to the extent of penetration of a specific object with given thickness by a liquid or a gas. It is the degee to which a materal or membrane transmits another substance. Units of permeance are volumetric output per unit membrane area per unit trans-membrane pressure. Permeance is also referred to as pressure-normalized flux.