Puradisc™ 25 AS filters provides pure filtration of aqueous solutions and low protein binding. They are made of Polysulfone membrane with an acrylic housing using the most advanced methods and design features available today. The Puradisc™ 25 AS prod uct family comes in 0.2 ?M , 0.45 ?M and 1.0 ?M pore sizes and is available in sterile or non-sterile packages. The sterile version is sealed in a "medical grade" clear blister pack, radiation sterilized and secured in its own protective shelf pack. Syringe barrels securely fit into the Luer Lock female inlet. Typical applications include aqueous HPLC sample clarification, buffer solutions, tissue culture media, biological samples, virus suspensions, serum samples, sterile isolation, particle counting solution, salt solutions, immunologicals, ophthalmic solutions and irrigation solutions.