229714, 1000mL Bottle Top Filter, 0.45 um PES Filter, 90mm Diameter, Sterile. Features: Easy-to-read molded graduations marks on bottle top filter Bold easy-to-read printed membrane and pore size for easy identification Curved bottle design for easy handling Printed lot number and expiration date on every bottle top Improved filter support provides faster flow rates Angled hose barb adapter fits three size hose diameters and prevents the filter from tipping Polyethersulfone (PES) membrane is for high flow and low binding 0.45 um PES membrane ideal for solution clarification Bottle top filters fit on CELLTREAT solution bottles or other standard 45mm threaded solution storage bottles Bottle top filters do not include solution bottles