Nalgene Filter Units provide a complete vacuum filtration system designed for the filtration of cell culture media, biological fluids, and other aqueous solutions. Each filter unit consists of polystyrene housing with a welded filter membrane mounted to a support plate in the upper structure. Side arms with quick-disconnect tubing adapters simplify vacuum line attachment. The upper structures are easily separated from their receivers and a sterile, leakproof closure is included for filtrate storage.

Nalgene Bottletop Filters are polystyrene funnels with integrally welded filter membranes designed for direct filtration into sterile glass media bottles. They thread securely onto bottles with 45-mm neck. Side arms with quick-disconnect tubing adapters simplify vacuum line attachment.

Nalgene® Bottletop Filters are polystyrene funnels with integrally welded filter membranes designed for direct filtration into sterile glass media bottles. They thread securely onto bottles with 45-mm neck. Side arms with quick-disconnect tubing adapters simplify vacuum line attachment.