A method for evaluating the integrity of a porous material.

摘要

A method for evaluating the integrity of a porous material a) wetting the porous material (14) with a liquid; b) contacting a first surface of porous material with a gas mixture comprising two or more gases, wherein at least one of the gases in the gas mixture has a different permeability in the liquid compared to the other gases gas mixture; c) applying pressure to the first surface of the porous material so that the gas mixture permeates through the porous material; d) measuring the concentration at equilibrium of at least one of the gases in the permeate gas mixture in an area near a second surface area of ​​the porous material; e) comparing the steady state concentration with a predetermined concentration, wherein a difference in the concentration in steady state and the predetermined concentration indicates the porous material is not integral.