Impermeable graphite as a fuel can, Part 2 - apparatus for the measurement of permeability.

Abstract

An apparatus is described which is capable of measuring permeabilities of porous media down to 4x10-11 cm2 sec-1 with a maximum error of ten per cent. The method, which uses a radioactive tracer technique, eliminates the errors due to gas leakage which are inherent in conventional apparatus for permeability measurement.