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Porosimeter and methods of assessing porosity

  • US 4,718,270 A
  • Filed: 01/17/1985
  • Issued: 01/12/1988
  • Est. Priority Date: 05/17/1983
  • Status: Expired due to Term
First Claim
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1. A pore size characterizing device comprising:

  • a gas pressure regulator arranged to be connected to receive a gas supply;

    a sample holder having an inlet and an outlet, said inlet being connected to said gas pressure regulator to receive gas therethrough, said sample holder being constructed to hold a sample pre-wetted with a liquid having characteristics of a perfluorocarbon, including a low surface tension and a low vapour pressure;

    a gas pressure sensor connected to said sample holder for measuring the differential pressure of gas across the sample;

    a gas flow sensor connected to measure the gas flow through the sample; and

    processing means responsive to said sensors for determining pore size characteristics of the sample.

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