Disposable bottletop aspirators provide a complete vacuum filtration solution for your separation and purification needs. All units come presterilized by gamma irradiation and certified nonpyrogenic, and are individually wrapped in easy-to-open packages. The large openings on the reservoir and funnel make for easy access. The funnel is made of clear polystyrene for easy viewing, and the bottle and filter adapter are made of 100% virgin polypropylene. Save time with presterilized disposable filtration units Individually wrapped for sterility. Easy-pouring large cap on reservoir. Graduations on funnel and reservoir for improved accuracy. Hose connector fits multiple hose diameters