Solutions for making membranes are thoroughly mixed at desired temperature and pressure. The chemicals are shaped in to flat sheets or hollow fibers and allowed to coagulate at the desired temperature.

The PMI Pore Pro Porometer is a low pressure instrument designed for the determination of pore size in geotextile fabrics. The robust instrument is easy to use and provides fast and accurate testing results on a variety of geotextile samples. Conforms to standard ASTM 316-03.

The PMI Advanced Perm Porometer is capable of measuring pore throat diameter, bubble point, mean flow pore diameter, pore diameter range, and pore size distribution.

The PMI Capillary Flow Porometer is used for R&D and quality control in industries worldwide such as filtration, nonwovens, pharmaceutical, biotechnology, healthcare, household, food, hygienic products, fuel cell, water purification, and battery. Samples often tested include filter media, membranes paper, powders, ceramics, battery separators and health care products.