Porometry measurements for tubular membranes

Porometry is a pore size characterization technique based on the displacement of a wetting liquid from the sample pores by applying a gas or a liquid at increasing pressure.

Minimum and maximum pore sizes and total pore size distribution of tubular membranes can be measured by applying the bubble point test. This a test designed to determine the pressure at which a continuous stream of bubbles is initially seen downstream of a wetted filter under pressure.