Porous Membrane Technologies

Protection Where It Matters Most

Solving venting and filtration challenges across a wide array of industries and applications

A carefully curated portfolio of expertly selected quality porous membrane materials that empower innovation by navigating venting and filtration challenges. Boasting three solutions that set the gold standard in performance to ensure quality and reliability where it matters most.

Empowering a safer, healthier, and more productive world is at the heart of our mission. While our venting and filtering solutions cater to a wide array of industries, we excel in medical, diagnostics, laboratory, and consumer & industrial sectors. Our expertise ensures that we protect what matters most, from precise dosing for patient safety in drug delivery to shielding the integrity of critical sensor technologies in harsh environments.


Filtration precision enhances the effectiveness of treatments, reduces the risk of errors or adverse reactions, and ultimately contributes to a safer and healthier patient population

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Improving the accuracy and efficiency of diagnostics with venting and filtration solutions enabling quicker interventions that save lives. 

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Precision filters to enhance cellular growth in advanced laboratory culturing and tissue engineering applications. 

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Consumer & Industrial


Safeguarding vital liquids in consumer & industrial applications with protection and cap vents that can withstand a wide variety of chemicals. 

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Choose from a variety of porous membrane technologies based on your specific needs

Porex offers a global manufacturing network to meet your supply chain needs. As a trusted membrane manufacturer of standard and customized porous material solutions, our portfolio includes a wide range of venting and filtration membrane solutions across multiple industries.

PTFE Membranes

Naturally robust and versatile to address some of the most demanding medical and industrial applications, our PTFE porous membrane technology is capable of filtering particles as small as 0.1 microns in environments up to 500°F. This naturally hydrophobic and waterproof membrane has extreme durability and provides superior chemical resistance to aggressive media and corrosive solvents that can impact device functioning and overall performance.

Sintered PTFE Membrane

Expanded PTFE Membrane (ePTFE)

Track-Etched Membranes

Track-etched membranes (TEM), which come from our sister company Oxyphen, feature a unique pore structure that offers the most precise control of pore size and pore density on the market. It revolutionizes the standard definition of surface filtration for hydrophobic, oleophobic, and hydrophilic applications.

Track-Etched Membrane