The Filtration Media and Membrane Industry
Whether your business involves water desalination and purification, pharmaceutical purification and separation, wastewater treatment, fuel and oil filtration, blood component separation, protein purification and separation, or another area of filtration, it is essential that you are able to accurately characterize your filtration media and complete filter cartridges. PMI offers testing services and equipment that provide you with this information, including:
- rate of fluid/gas flow through filtration media
- pressure drop across media
- efficiency of separation of particles of different sizes by filtration media
- rate of fouling or clogging of filtration media
- absolute rating of the filter and
- filter integrity
The many instruments in the PMI Capillary Flow Porometer line test for the above properties. Porometers generate information including mean pore size, pore size distribution, bubble point (largest pore size), integrity, liquid, gas, Gurley, and Frazier permeability, and hydro-head. These tests also can be performed under compression, tension, or elevated temperature to simulate actual operating conditions.
PMI has spent considerable research time and effort on improvement and augmentation of the Capillary Flow Porometer instrument line. PMI regularly produces new versions of Porometers and customized Porometers. PMI is currently the only company that manufactures such an extensive Porometer line.
In addition to the PMI Porometers, PMI's BET Sorptometer and Mercury/Nonmercury Intrusion Porosimeter provide useful information for the filtration industry. The BET Sorptometer and the Mercury/Nonmercury Porosimeter both provide data about the total porosity of a sample. It is often important to know this information to predict such factors as fouling, clogging, and to investigate the complete flow mechanics of filtration media. Also important to note is that while the BET Sorptometer can provide total porosity information, its measurable pore range is smaller than many of the pores found in filter media.