Syringe Filters PTFE Membrane Hydrophilic Filtration,0.22um Pore Size 25mm Membrane Diameter, Pack of 100: Industrial & Scientific, strong acid, Interface:, 22um Pore Size, connect to needle end, aging resistance, The diameter of 33mm can filter 100-200ml sample, The diameter of 25 mm can filter 10-100ml sample, 3, please don’t hesitate to contact us, 【Quick delivery】:The syringe