EMD Millipore Steritop-GV SCGVT05RE Polystyrene Bottle Top Vacuum Filter Unit, Radio-Sterilized, Hydrophilic, PVDF Membrane, Clear with Blue Adapter, 500ml Capacity, 0.22µm Pore Size, 45mm Thread (Pack of 12)

Steritop bottle top filter units provide a large filter area for rapid sterile filtration of aqueous fluids into wide-mouth (45 mm) bottles. A small tab inside the funnel secures an optional prefilter in-place during filtration. For added protection against contamination, the threads for bottle attachment have been slightly recessed in case the funnel accidentally touches a work surface.