Filter Unit 2.5 cm dia., 0.98 Inch, 100 mL, Clear, 0.22 µm Pore Size, 5.2 bar Pressure Rating, 3.9 cm2 Filtration Area, <100 µL Hold up Volume, 45°C Temperature, Female Luer Lok/Male Luer Slip Connectors, Sterile. Low protein binding, sterilize tissue culture media, protein solutions .