Nalge Nunc MF75 Vacuum Filter Units, PES Membrane, Sterile, NALGENE 295-4545 Bottle-Top Filters Only With Standard Pes Membrane, Case of 12 | $18.04 Off w/ Free Shipping
500 mL Rapid-Flow™ Bottle Top Filter 0.45 µm SFCA membrane, 75mm dia 45mm neck | Nalgene 291-4545 | Macalaster Bicknell Company of NJ
Amazon.com: Epic Nalgene OG | Water Bottle with Filter | USA Made Bottle and Filter | Dishwasher Safe | Filtered Water Bottle | Travel Water Bottle | BPA Free Water Bottle