POROS® A, G, and CaptureSelect™ HPLC columns incorporate the advantages of high-speed POROS® chromatography resins with the unique selectivity of Protein A, Protein G, and CaptureSelect™ ligands (Figure 1). The combination allows 3-minute quantitation of immunoglobulins, fusion proteins, Fabs, and biospecific antibodies.

  • Broad utility—POROS® A, G, and CaptureSelect™ ligands address most biological drug classes
  • Rapid—POROS® resins offer fast quantitation or purification of immunoglobulins and fusion proteins
  • Hands-off operation—HPLC method can be automated for streamlined operation
  • Robust—deliver high-performance purification over hundreds of chromatography cycles
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New POROS® Ligands Provide Alternative Specificities

High Speed with High Specificity

The combination of Protein A, Protein G, and CaptureSelect™ affinity ligands when combined with POROS® 20 µm resin provides a high flow rate, high-performance chromatography solution for the rapid quantitation and small-scale purification of:

  • IgG—all subclasses, specific for human
  • IgM—specific for human, mouse, or rat
  • Kappa light chain—specific for human Igs and Fab fragments with a kappa light chain
  • Lambda light chain—specific for human Igs and Fab fragments with a lambda light chain
  • Human serum albumin
  • Fusion proteins, Fc, or human serum albumin
  • Follicle stimulating hormone (FSH)—binding only the intact form of FSH
Find data about each affinity ligand


An example of the chromatographic performance of POROS® CaptureSelect™ LC-Kappa with five unique kappa Fab fragments is shown in Figure 2a. The associated standard curves, Figure 2b, exhibit excellent linearity.

Check out the CaptureSelect™ Technology

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Figure 2a POROS® resins exhibit high speed and efficiency, regardless of kappa light chain. These overlaid chromatograms of 5 kappa light chains run on a POROS® LC Kappa column illustrate the speed and efficiency of the analysis.
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Figure 2b POROS® kappa standard curves exhibit good linear range (8x) and linear correlation coefficients (R2 range: 1 to 0.9991).

Chromatography details: POROS® CaptureSelect™ LC-Kappa column (Cat. No. 4469149, 2.1 x 30 mm, PEEK™ polymer); System: Agilent 1200, flow rate 2 mL/min; Sample injection: 50 μL of purified kappa light chain at a 0.5 mg/mL; Equilibration buffer: phosphate buffer, 150 mM NaCl pH 7.5; Elution buffer: 12 mM HCl, 150 mM NaCl pH 1.9; UV detection: 280 nm.

POROS® Affinity HPLC Columns

POROS® A, G, and ligands are available in convenient prepacked HPLC columns. The column range addresses analytical and preparative requirements for the quantitation and purification of immunoglobulins or Fc fusion or HSA fusion proteins.

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