Three fluid method for non-mercury intrusion porosimetry

Abstract From the Canadian patent

A three-fluid method of non-mercury liquid intrusion porosimetry. Thesample to be tested and a quantity of non-wetting intrusion liquid other than mercury are introduced into a sealable pressurizable chamber, the sample, being above the intrusion liquid. The chamber is sealed and evacuated. An intermediate pressurizing liquid, such an mercury is introduced into the, chamber and pressurized by a primary pressurization fluid such as alcohol or, oil, so as to force the intrusion liquid into the pores of the sample. The volume of intermediate pressurization liquid introduced into the chamber is measured as the pressure is increased incrementally to find the pore, distribution of the sample.