Porosimeter

Porous Materials Inc. (PMI, Ithaca, N.Y., U.S.A.) has introduced its Liquid Extrusion Porosimeter, which it claims is the only test instrument that has the ability to determine pore volume and measure liquid permeability without employing mercury or other toxic materials in the process. For testing, a sample is soaked

Porous Materials Inc. (PMI, Ithaca, N.Y., U.S.A.) has introduced its Liquid Extrusion Porosimeter, which it claims is the only test instrument that has the ability to determine pore volume and measure liquid permeability without employing mercury or other toxic materials in the process. For testing, a sample is soaked in a nontoxic liquid, which fills pores, and then pressure is applied to one side of the sample using a non-reacting gas, displacing the liquid from the pores. The volume of displaced liquid is measured to determine pore volume. Benefits of the testing methods include that the instrument's low pressures do not distort the pore structure and that the test sample is reusable after testing. The instrument is fully automated, and Windows-based software minimizes testing time and operator involvement.