Polycap AS 36 filter by Whatman is recommended for filtering aqueous solutions. It combines a glass microfiber prefilter and a nylon membrane, prolonging the life of the filter. Allows for large volumes with difficult samples to be filtered easily. 36mm Capsule: 400cm2 (62 in2). Nylon membrane layer is inherently hydrophilic, has low extractables, is bio-safe and has excellent flow rates. Ultra-clean containing no surfactant or mold release agents. Housing thermally fused (no glues, adhesives or extraneous materials). Integrity-testable by bubble point, pressure decay or forward flow methods. Provides highly effective filtration area in a small size. Autoclavable some pre-sterilized with gamma irradiation. Manufactured in clean room facilities under ISO quality systems. Sterile. Applications Include: admixtures, biologicals, buffers, cleaning/rinsing solutions, enzymes, extemporaneous solutions, immunologicals, irrigation solutions, ophthamalic solutions, pharmaceutical solutions, reagent preparation, salt solutions, therapy solutions, tissue culture media, nutrients, and viral suspensions. Sterile. Retention: 0.2 µm. Per each. Whatman #: 6705-3602.