PTFE Laminated Membrane Filters PTFE Laminated Membrane Filters, 0.2 Micron, 13mm, 100/Pk PTFE Laminated Membrane Filters, 0.20 micron, 13 mm, pack of 100. Hydrophobic, durable ePTFE laminated on to a polypropylene later. Ideal for venting, phase seperations, and aerosol sampling. SKU PTFE0213100 Manufacturer Sterlitech Pore Size 0.20 Diameter (mm)