EMD MILLIPORE UFC501096 Amicon Ultra Centrifugal Filter Unit with Ultracel-10 Membrane, Clear, 0.5 mL Volume, 1 sq. cm. Filtration Area, 10.8 mm Diameter x 49.9 mm L: Amazon.com: Industrial & Scientific
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Amicon Ultra-0.5 mL Centrifugal Filters for DNA and Protein Purification and Concentration - Sample Prep Centrifugal Filter Units
Government Scientific Source
Amicon Ultra 15 Centrifugal Filter Unit at Thomas Scientific