Acrodisc Syringe Filter, 0.2µm, GHP Membrane, 25 mm (1000/pkg) 4929: 25 mm Acrodisc Syringe Filter, 0.2 µm, wwPTFE membrane, 25 mm (1000/pkg) 4567: Acrodisc Syringe Filter, 0.2 µm, GHP Membrane, Minispike outletspike outlet, 13 mm (1000/pkg) 2401: Acrodisc Syringe Filter, 0.2 µm, wwPTFE membrane Minispike outlet, 13 mm (1000/pkg) AP-4305