Acrodisc® PVDF Membrane Syringe Filter, 13 mm dia, 0.45 µm Pore Size . Syringe Filter, 13 mm dia, 0.45 µm Pore Size, PVDF Membrane, Polypropylene Housing, Borosilicate Glass Prefilter, Non-sterile, Useful for a Wide Range of Applications, Including Aggressive and Non-aggressive Solvent-based Mobile Phase