Protein concentration and buffer exchange

Using a standard Amicon® Ultra centrifugal filter, a few rounds of diafiltration can efficiently remove unincorporated label from an antibody labeling reaction without diluting the sample.

A Simple Strategy for Protein Enrichment Using Ultrafiltration

The human plasma proteome is a vast resource for biomarker discovery and investigation.

Simple dialysis of Small Volume Samples using V Series Membranes

This article is a protocol for Simple dialysis of small volumes using V Series membranes

Sample Preparation for Size Exclusion Chromatography

Samples for chromatographic purification should be clear and free from particulate matter. Simple steps to clarify a sample before beginning purification will avoid clogging the column, can reduce the need for stringent washing procedures, and can extend the life of

Rapid, Ultrafiltration-based Method for Purification of Monoclonal Antibodies Using the Centricon® Plus-70 Device

Monoclonal antibodies (MAb) continue to gain importance as therapeutic and diagnostic agents for many cancers. The process of screening hybridoma libraries for candidate MAbs typically requires several days to complete and can be labor-intensive when evaluating multiple MAbs in parallel.

Large volume concentration and diafiltration with Amicon® Stirred Cells

Demonstrating the effective use of Amicon Stirred Cell for large volume concentration through diafiltration.

Rapid Antibody Concentration with Amicon® Ultra Centrifugal Filters

Purification protocols for immunoglobulins generally include affinity binding to Protein A or G chromatography media, washing unbound proteins, and eluting with a low pH buffer.

Extracellular Vesicle Protocol

Best practices for standardizing and reducing the Extracellular Vesicle Preparation workflow, and eliminating contamination of EV preparations with dead-cell-derived vesicles.

Desalting Samples Using Mini Dialysis Kit

Mini Dialysis Kit from Cytiva is designed for the dialysis of small sample volumes with minimal handling and sample loss and reduces the pronounced streaking on 2-D gels caused by low-molecular-weight contaminants.

Buffer Exchange and Desalting for Affinity Chromatography

How to perform buffer exchange and desalting with Sephadex G-25, HiTrap Desalting columns, or ÄKTAprime plus.

Column packing and preparation for Ion Exchange Chromatography & Chromatafocusing

This page shows how to perform column packing and preparation for ion exchange chromatography and chromatafocusing when using Tricorn or XK columns available from Cytiva.

Conditioning Purified Membrane Proteins

This page shows how to condition membrane proteins for further analysis with products from Cytiva.

Desalting/Buffer Exchange and Concentration for Affinity Chromatography of Tagged Proteins

This page shows how to perform sample desalting, buffer exchange and concentration for affinity chromatography of tagged proteins.

Detergent Removal with Amicon® Pro Centrifugal Filters

Detergents are frequently used to solubilize proteins and nucleic acids during purification, but the presence of detergents may interfere with downstream analyses.

Small-scale Antibody Purification With Buffer Exchange and Concentration: Amicon® Pro System

If an antibody must be purified from a small sample volume (0.5-10 mL), then the Amicon® Pro Purification System is recommended.

Urine Concentration with Amicon® Ultra Centrifugal Filters

Accurate measurement of specific proteins in urine is important for diagnosing and managing diseases.

Buffer Reference Center

Choose and prepare a biological buffer based on your pH requirements as well as the pKa, a measure of acid strength that accounts for pH, concentration, and temperature.

Amicon® Stirred Cells

User guide for Amicon® Stirred cells including features, operation, specifications, and troubleshooting.