Oct 29, 2021 · Polycarbonate Track Etch (PCTE) membranes are made from a thin, microporous polycarbonate film material. It is ideally suited for use in blood assays and high-purity and general filtration. PTFE Syringe and Vent Filters – Sterlitech PTFE Syringe and Vent Filters Hydrophilic PTFE Syringe Filters, Advantec, 0.45 Micron, 13 mm, 100/Pk (13HP045AN