Unique-Mem® Unlaminated Track-Etched Membranes

Unique-Mem® track-etched membranes consist of a single, unsupported membrane layer (PET or PC) with cylindrical shaped pores that penetrate the membrane in defined angles. Because of this angled pore structure which divides multiple pores on one side to a single pore on the other side, regular pore sizes and densities can be achieved. Thus, exact flow-through and water entry pressure (WEP) can be reached.

Our track-etched membranes are resistant to pressure changes, memory effects and offer optimal flex-fatigue properties. ​Their naturally smooth surface delivers outstanding backflushing abilities in cell-culturing or water filtration as well as excellent repellency from liquids and solids for flow rate consistency during operation. Our membranes are available using hydrophilic, hydrophobic or oleophobic material and have precisely determined flow rates which can be customized to your application.

Unique-Mem® track-etched membranes are biologically inert, low protein binding, low in extractables and leachables, and endotoxin-free. They show high chemical resistance and therefore are well suited for organic-solvent applications. It is common for gamma-ray and X-ray sterilization methods to be used with our technologies. as well.

​All of Porex’s track-etched membranes are PFOA-free and can be used freely in accordance with the latest REACH legislation from July 4, 2020.​