Achieve both high sample recovery and fast sample processing. EMD Millipore Amicon™ Ultra-4 Centrifugal Filter Units feature regenerated cellulose membranes that are ideal for protein & nucleic acid purification, concentration and desalting. Available in several diameters and molecular weight limits.

Unit, Filter; Centrifugal; Amicon Ultra-4 regenerated cellulose membrane; Swinging bucket: 4mL capacity; 10,000 NMWL; 22.7 dia. x 124mmL; 8/PK

• High-recovery Ultracel™-PL regenerated cellulose membrane
• Vertical membrane reduces polarization for ultrafast spin times (as little as 10 to 15 min.)
• Heat-sealed membrane eliminates possibility of downstream extractables
• Housing is constructed of copolymer styrene/butadiene
• Centrifuge tube is polypropylene; tube cap and liner are polyethylene
• Universal rotor compatibility
• High retentate recovery of >90%
• High concentration factors of 80- to 100-fold
• Easy sample monitoring due to translucent housing and volume gradations
• Direct pipetter sample access eliminates processing step to recover concentrate

Applications:

• Concentration of biological samples containing antigens, antibodies, enzymes, nucleic acids, or microorganis
• Purification of macromolecular components found in tissue culture extracts or cell lysates
• Concentration of dilute or prepurified proteins from column eluents
• Desalting and buffer exchange