HPLC Syringe Filters – Glass, PTFE, PES, PP, Nylon, & More. We carry syringe filters made of glass fiber, polypropylene (PP), polyethersulfone (PES), PVDF, polytetrafluoroethylene (PTFE), cellulose acetate, and more. HPLC Syringe Filters available in two sizes: 13 mm and 30 mm. Two pore sizes: 0.2 µm and 0.45 µm.