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500mL Polypropylene Bottle Top Filter, PTFE Filter Material, 0.45um, 90mm, Non-sterile – AssayCell Technologies
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Autofil Super Speed Sterile Disposable Vacuum Bottle Top Filters with 0.2um Foxx Velocity Sterilizing PES Membrane, 500mL, 12/CS: Amazon.com: Industrial & Scientific
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