GVWP04700. Trade Name. Durapore ®. Description. Durapore® Membrane Filter, 0.22 µm. Background Information. Durapore® membranes provide high flow rates and throughput, low extractables and broad chemical compatibility. Hydrophlic Durapore® membrane binds far less protein than nylon, nitrocellulose, or PTFE membranes. Features & Benefits.