ature: filter diameter: 13mm, pore size: 0.22um, membrane material: PES , hydrophilic property . Syringe filters are made of inert plastic house, membrane, and luer lock fit. It is used with disposal syringes or filtration device with luer fit. Syringe filters are often one-time use only. Biomed Scientific syringe filters offer universal application for analytical procedures. Hydrophilic PES (Polyethersulfone) suitable for pre-filtration and filtration of buffers and culture media . Hydrophilic; High flow rates; Low protein binding; Low concentrations of extractable substances; Excellent chemical stability; High thermal and oxidative stability.