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
Amicon® Pro 24 Pack (excluding Amicon® Ultra-0.5 filter) Amicon® Pro Purification System - A Centrifugal Tool collapsing protein purifcation with concentration & buffer exchange | Sigma-Aldrich
Government Scientific Source
Merck-Millipore UFC503096 Amicon Ultra-0.5 Centrifugal Filter Unit with Ultracel-30 membrane 96/CS