4450 Acrodisc LC PVDF Minispike, 0.2 µm, 13 mm 100/300 4455 Acrodisc LC PVDF, 0.2 µm, 13 mm 100/300 4452 Acrodisc LC PVDF Minispike, 0.45 µm, 13 mm 100/300 4457 Acrodisc LC PVDF, 0.45 µm, 13 mm 100/300 4406 Acrodisc LC PVDF, 0.2 µm, 25 mm 50/200 4408 Acrodisc LC PVDF, 0.45 µm, 25 mm 50/200 Ion Chromatography Certification Pall Life