Membrane PTFEDia 13mm, 25mmPore Size 0.22um & 0.45umNature Hydrophilic & HydrophobicFeatures Hydrophbic : Compatible & Stable with Wide Range of ChemicalsHydrophilic : Low Protein binding, HPLC certified for low levels of UV-absorbingextractable; High flow rates with minimal aqueous extractable Applications Filtration of Organic solvents specially for the Strong solvent which other membranes cannot do.