Shop a large selection of Syringeless and Syringe Filters products and learn more about Thermo ScientificTitan3 PTFE (Hydrophobic) Syringe Filters. PTFE; Pore Size: 0.20μm; Limited warranty period: Subject to all warranty requirements and exclusions set out in our Terms and Conditions of Sale, this product is warranted from the date we ship the product and for ninety (90) days thereafter.