Porometry, gas-liquid expulsion method

Porometry

Porometry allows the determination of pore size distributions as well as gas and liquid permeability and bubble points of through-pore systems such as filters, membranes and papers.

Capillary flow porometry (gas-liquid)

Standard capillary flow porometry is useful to characterize the pore structure of materials such as membranes, filter media, ceramics, paper, textile and similar materials. A non-toxic liquid is let spontaneously fill the pores in the sample and a non-reacting gas displaces the liquid from pores by increasing the gas pressure. First the larger pores will get emptied, as the pressure increases more and more smaller pores are progressively emptied. The pressure and flow rate of the gas through the emptied pores provides the through pore distribution and the first detectable flow pressure defines the so called bubble point, which is related to the maximum pore size in a sample.

Innova series

The 3P Innova series capillary flow porometer is a thorough pore size analyzer for porous materials which accurately measures the crucial microporous characteristics such as narrow pore size, maximum pore size, pore size distribution, liquid permeability, gas permeability, and external surface area. Currently, no other measuring instrument is capable to do all the measurements in a single system.