Reusable PS Bottle Top Filters. Nalge-NALGE DS0320-5045

Polysulfone filter units provide the convenience of a bottle top filter with the cost savings of a reusable filter housing. Screw securely onto glass media bottles* with 33- or 45-mm neck sizes. Deep threads screw onto bottle for convenient filling and vacuum filtration without holding filter to bottle. Removable sterilization membrane support plate is designed to provide maximum flow rate and throughput. Vacuum port on lower half of assembly. Molded-in graduations. Available in 250- and 500-mL sizes. 13.3 mm filter area. Polypropylene tubing adapter can be stuffed with cotton for sterile venting. Accepts 1/4-inch to 5/16-inch (6- to 8-mm) I.D. vacuum tubing. Non-cytotoxic. WARNING! All NALGENE Filterware is for research use only, not for in vitro diagnosis or parenterals. *CAUTION: Use only sterile bottles designed for use with vacuum. Always use safety shield during vacuum procedures.