Inventors:
Sergio Tentor - Newark DE
Assignee:
E. I. Du Pont de Nemours and Company - Wilmington DE
International Classification:
G01N 1508
Abstract:
An apparatus for measuring the permeability of solids at any given condition of pressure and temperature and flow rate, the control of pressure being achieved without a valve by using capillary tubing containing an oil. The apparatus is capable of operating at constant pressure automatically for long periods of time and a method for using the apparatus to measure permeability of a solid at constant flow rate and constant pressure.