Nalgene Filter Holder with Receiver, PSF 47 mm, 293mm H x 134mm OD, 1000 ml Capacity (Case of 4): Science Lab Bottletop Filters: Amazon.com: Industrial & Scientific
Nalgene® 450-0020, 500mL Filter Unit, CN Membrane, Sterile, 0.2um, case/12
Thermo Scientific Nalgene Rapid-Flow Sterile Disposable Filter Units with | Fisher Scientific
Nalgene Filter Holder with Receiver, PSF 47 mm, 293mm H x 134mm OD, 1000 ml Capacity (Case of 4): Science Lab Bottletop Filters: Amazon.com: Industrial & Scientific