Amicon® Devices

When downstream quality matters, it’s essential to rely on the best upstream tools. From sample preparation to final concentration, Amicon® devices from Merck Millipore excel in delivering high yields and purity, ensuring consistent and reproducible results. Whether you’re concentrating dilute samples, performing buffer exchange or desalting, purifying proteins from complex mixtures or more, the devices simplify the workflow, making protein sample preparation a breeze.

With Amicon® devices, you can achieve crystal-clear data from every bit of protein, effortlessly. 

Amicon® Ultra Centrifugal Filter Devices

Fast and Easy Protein Concentration

Amicon® Ultra Centrifugal Filter devices offer rapid ultrafiltration, efficiently concentrating proteins from both dilute and complex sample matrices. With their vertical design and ample membrane surface area, these devices ensure quick sample processing, high sample recovery, and up to an 80-fold concentration increase.

The devices are offered with nominal molecular weight limits (NMWLs) of 3 kDa, 10 kDa, 30 kDa, 50 kDa, and 100 kDa in four different volumes: 

  • Amicon® Ultra 0.5 mL Centrifugal Filters
  • Amicon® Ultra 2 mL Centrifugal Filters 
  • Amicon® Ultra 4 mL Centrifugal Filters
  • Amicon® Ultra 15 mL Centrifugal Filters


  • High Recovery: Achieve recovery rates of 90-98% using Ultracel® regenerated cellulose membrane with various molecular weight cut-offs.
  • Quick Processing: Vertical membrane design minimizes concentration polarization and membrane fouling, enabling ultra-fast spin times of just 10–15 minutes.
  • Low Non-specific Binding: Heat-sealed membrane reduces downstream extractables, ensuring minimal non-specific binding.
  • Convenient Monitoring: Translucent housing and volume gradations allow easy sample monitoring.
  • Direct Pipetter Access: Access samples directly with a pipetter, eliminating the need for an additional processing step to recover concentrate.
  • Reverse Spin Capability: Consistently achieve maximum protein recoveries, even with small, dilute samples, thanks to the reverse spin capability.
  • Low Sample Loss: Physical deadstop prevents spinning to dryness, minimizing the risk of sample loss.
  • Broad Chemical Compatibility: Compatible with a wide range of aqueous solutions spanning pH 1 to 9.
  • Consistent and Reliable: Enjoy predictable concentration factors without sample drying out, ensuring consistent and reliable sample preparation.
  • Rapid Protein Concentration: Concentrate proteins 25- to 80-fold in a single step, facilitating rapid protein concentration.


  • Concentrating biological samples containing antigens, antibodies, enzymes, nucleic acids, or microorganisms.
  • Purifying macromolecular components found in tissue culture extracts or cell lysates and removing proteins before HPLC.
  • Concentrating dilute or pre-purified proteins from column eluents.
  • Performing desalting, buffer exchange, and protein dialysis.
  • Conducting size exclusion and protein fractionation.

Amicon® Stirred Cells

Ideal choice for large volume concentration needs

Ideal choice for large volume concentration needs

Amicon® Stirred Cells are perfect for separating macrosolutes like DNA, RNA, and proteins in large-volume samples ranging from 50 mL to 400 mL. They’re also great for membrane analysis, allowing users to insert membranes of their choice.

Designed for solutions with up to 10% macrosolute concentration, these stirred cells offer high flow rates, making concentration and salt removal quick and easy. Using pressurized ultrafiltration (pUF), they process large sample volumes rapidly for concentration, diafiltration, and buffer exchange. Gas pressure is directly applied for filtration, retaining solutes above the membrane’s nominal molecular weight cut-off (NMWCO) while allowing water and solutes below the cut-off to pass into the filtrate.

Available in three sizes (50 mL, 200 mL, and 400 mL)


  • Ergonomic Design: Easy to open, close, and assemble.
  • Quick Tubing Connectors: Ensure easy and secure setup.
  • Integrated Safety Features: Includes screw threads and pressure relief valve, eliminating the need for external housing. This ensures easier assembly, disassembly, and clear confirmation of proper setup.
  • Leak-Proof Design: Ensures overall superior integrity.
  • Wide Membrane Disc Selection: Offers a broader range of options.
  • Revised User Guide: Provides clearer instructions for operation and gas source connection.
  • Enhanced Support: Better spare parts and accessory assistance.
  • Secure Stir Bar: Minimizes the risk of membrane damage.
  • Gentle Magnetic Stirring: Minimize concentration polarization and shear denaturation with gentle magnetic stirring.
  • Autoclavable: Ensure sterilization as all stirred cells can be autoclaved.


  • Concentrate, diafilter, and exchange buffers for macromolecule solutions including proteins, enzymes, antibodies and viruses

Amicon® Pro Purification System

Purify, exchange buffer and concentrate in one device

Simplify and streamline your protein purification process with the all-in-one Amicon® Pro Purification System. This innovative device combines affinity-based spin column purification with downstream sample concentration and buffer exchange, eliminating the need for multiple devices and risky sample transfers.

With a large reservoir that can handle various sample volumes, the Amicon® Pro reduces hands-on time and minimizes centrifugation steps. Simply attach the included Amicon® Ultra Filter for simultaneous elution, concentration, and highly efficient buffer exchange (>99%) in a single spin


  • High Yield: Minimize sample loss with no need for sample transfer.
  • Gentle: Innovative design ensures gentle, continuous flow for efficient buffer exchange.
  • Fast: Achieve purified protein in your preferred buffer in just 5 spins, directly from lysate.
  • Flexible: Easily configure the modular device to accommodate various sample preparation requirements.


  • Affinity Purification
  • Depletion of Abundant Proteins
  • Protein Enrichment
  • Buffer Exchange
  • Desalting
  • Clean-up of Antibody Labeling Reactions
Amicon® Pro Purification System performance comparison with other systems