POROS™ 50 HS Strong Cation Exchange Resin

All of the pre-packed POROS columns, regardless of column size or resin, have the same 10-32 female fittings on the column. Columns are compatible with Waters and Agilent HPLC systems. You will need 1/16 inch male fittings for the HPLC to attach the column.

Find additional tips, troubleshooting help, and resources within our Protein Purification and Isolation Support Center.

UPLC is typically described as chromatography with sub-2 µm particles, which drives higher efficiency/better separation independent of operating flow rate. As particle size decreases, backpressure increases so the UPLC systems tend to have higher pressure ratings compared to HPLC systems. The flow rates on UPLC systems would be sufficient for POROS columns. Pump capabilities are typically 0.1-1.0 mL/min, so not as fast as a HPLC, but sufficient. Hold-up volumes on UPLC systems are lower than HPLCs, so this can help with sensitivity and efficiency. So from a pressure and flow standpoint there should be no challenge to operate a POROS CaptureSelect column on a UPLC system.

That being said, care should be taken running POROS columns on UPLC systems. Higher pressure safety interlock MUST be set at the rated column pressure, typically 180 bar. HPLC column hardware is not rated to operate at the static pressures possible and typical on UPLC systems. A clog or the like on a UPLC system could generate unsafe pressures on any HPLC-rated column before the default UPLC safety pressure interlock is tripped.

Find additional tips, troubleshooting help, and resources within our Protein Purification and Isolation Support Center.

Resin lifetime depends on how the resin is used and the cleaning process that is employed. Therefore, each purification process will need to be evaluated specifically, especially if long lifetime is desired. Because binding can be different between resins, different cleaning schemes may be needed. An unoptimized cleaning process of any resin may yield <5 uses, and an optimized cleaning process can yield a hundred cycles or more. Discoloration of resin can occur for different reasons from process compounds such as metals like iron (Fe2+/3+) and copper (Cu2+), additives to the media (like vitamin B12 and folic acid), and elution solutions (like magnesium chloride, Mg2+). We can provide recommendations that have proved helpful for many customers to optimize the life of their POROS or CaptureSelect column.

Find additional tips, troubleshooting help, and resources within our Protein Purification and Isolation Support Center.

Increased titers and product demand have caused substantial bottlenecks in downstream processing for a range of biomolecules. POROS chromatography resins address these challenges with solutions that help maintain performance and add process flexibility. Due to the polymeric nature of the backbone and the way we attach the ligands, the beads have very robust physical and chemical stability. This allows for aggressive solutions to be used, if needed, to improve cleanability and thereby increase resin lifetime/reuse. Our ion exchange resins are the go-to resins in downstream monoclonal antibody and recombinant protein chromatography where capacity, resolution, and yield are critical. We are also working on a new line of hydrophobic interaction resins that may be of interest for future projects that will be a best-in-class product for capacity and resolution with an added benefit of being able to load under lower salt concentrations and faster flow rates. We are also a strong partner when it comes to quality and supply of our products.

Find additional tips, troubleshooting help, and resources within our Protein Purification and Isolation Support Center.