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Filter, Membrane, Pore Size 0.45 µm, Diameter 47 mm, 100/pk, plain, non-sterile | Hach USA - Overview
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430513 | Corning® 500 mL Bottle Top Vacuum Filter, 0.22 µm Pore 33.2cm² CA Membrane, Fits 45 mm Diameter Necks, Sterile, 12/Case | Corning
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