pes 0.45 micron hplc filters for analysis-Chromatography . Home » News » HPLC Syringe Filter » pes 0.45 micron hplc filters for analysis Polyethersulfone (PES) Membrane Filters, 0.45 Micron, 47mm, 100/P Sterlitech PES (polyethersulfone) membrane filters, 0.45 micron pore size, 47 mm diameter, pack of 100. Professional PVDF filter vials price