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Amicon Ultra-15 Centrifugal Filter Unit

Ultracel-50 regenerated cellulose membrane, 15 mL sample volume

15 mL sample volume, 50 kDa MWCO, Centrifugal concentrator


polyethylene cap
polyethylene liner
polypropylene tube
regenerated cellulose membrane
regenerated cellulose support
styrene-butadiene housing

Quality Level



product line



Amicon® Ultra


15 mL sample volume


protein extraction: suitable
protein purification: suitable


12.1 cm (4.807 in.)


2.97 cm

filtration area

7.6 cm2


15 mL

pore size

50 kDa NMWCO

shipped in


General description

Amicon® Ultra 15 mL centrifugal devices with Ultracel® 50,000 Dalton molecular weight cutoff filters provide fast ultrafiltration, and reliable retention of macromolecules. For example, bovine serum albumin (67 kDa) at 1 mg/ml initial concentration is retained at >95% .

The vertical design and available membrane surface area provide fast sample processing, high sample recovery (typically greater than 90% of dilute starting solution), and the capability for 80-fold concentration. Solute polarization and subsequent fouling of the membrane are minimized by the vertical design, and a physical deadstop in the filter device prevents spinning to dryness and potential sample loss.

The concentrate is collected from the filter device sample reservoir using a pipetter, while the ultrafiltrate is collected in the provided centrifuge tube. The device can be spun in a swinging bucket or fixed angle rotor. With their vertical membrane design and deadstop, Amicon®Ultra 15 mL filters deliver the highest recovery with short spin times.


  • Ultrafiltration with 50,000 Dalton molecular weight cutoff Ultracel® membrane.
  • Concentration of biological samples containing antigens, antibodies, enzymes, nucleic acids, or microorganisms.
  • Purification of macromolecular components found in tissue culture extracts or cell lysates and protein removal prior to HPLS.
  • Concentration of dilute or pre-purified proteins from column eluents.
  • Desalting, buffer exchange and protein dialysis.

Features and Benefits

  • Ultracel® regenerated cellulose membrane with 50 kDa NMWCO delivers retentate recovery of greater than 90%.
  • Vertical membrane reduces concentration polarization for ultra-fast spin times (as fast as 10–15 minutes).
  • Heat-sealed membrane minimizes downstream extractables.
  • 100% integrity tested for reliable performance.
  • Convenient sample monitoring with translucent housing and volume gradations.
  • Direct pipettor sample access eliminates processing step to recover concentrate.
  • High concentration factors of 80–100X.

Physical form

Color Code: Clear with pink cap

Legal Information

Amicon is a registered trademark of Merck KGaA, Darmstadt, Germany
ULTRACEL is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

10-13 - German Storage Class 10 to 13

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