Pall 4558 Acrodisc Syringe Filters with GHP Membrane, Pore Pall 4558 Acrodisc Syringe Filters with GHP Membrane, Pore Size 0.45 µm, Diameter 25 mm, Pack of 1000. This fits your . Make sure this fits by entering your model number. Automation Certified to ensure smooth operation and worry-free performance 24 hours a day in automated workstations.