✦Membrane material: PES, MCE, PVDF, PTFE, NY, GF, PP… ✦ Membrane hole size: 0.1 μm, 0.22 μm, 0.45 μm, 0.65 μm, 0.8 μm, 1.0 μm, 1.2 μm, 3 μm, 5 μm… ✦ Syringe filter diameter: 4 mm, 13 mm, 17 mm, 25 mm, 30 mm, 33 mm, 50 mm ✦ Features: Noke PTFE (Polytetrafluoroethylene) syringe filters are inherently hydrophobic, with hydrophilic options also available.  This membrane offer the highest chemical compatibility, ideal for clarifying organic solvents and air venting, but require pre-wetting for aqueous filtration.