https://ecatalog.corning.com/life-sciences/b2b/US/en/Membrane/Spin-X%C2%AE-Centrifuge-Tube-Filters/p/8170 These Costar® Spin-X® centrifuge tube filters have a 0.45 µm pore NY membrane-containing filter unit within a 500 µL capacity polypropylene microcentrifuge tube.Nylon (NY) membranes are naturally hydrophilic, surfactant-free and offer the lowest extractablesIdeal for removing bacteria, particles, or cells from liquids, HPLC sample preparation and DNA removal from agarose or acrylamide gels.Nonsterile and nonpyrogenic.Maximµm Relative Centrifugal Force is 16,000xg.
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