Pall 4550 Acrodisc Syringe Filters with Nylon Membrane, 13 mm Diameter, 0.2 µm Pore Size, Minispike Outlet, Pack of 100: Health And Personal Care: Amazon.com: Industrial & Scientific
13 mm Acrodisc® Syringe Filters with 0.2 µm Supor® Membrane, Sterile, 75/pkg | Pall Shop
Acrodisc syringe filters with water-wettable PTFE membranes
Acrodisc Syringe Filter with Supor Membrane, 25 mm Diameter, 0.25 um Pore Size, Sterile, 50/box