WorkBeads affimAb

WorkBeads affimAb

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WorkBeads™ affimAb resin is an optimized alkali-stable resin designed for purification of monoclonal- and polyclonal antibodies in laboratory to process scale. This resin has a superior base matrix in combination with an optimized alkali-stable protein A ligand. This results in high dynamic binding capacity also at short residence times, and stable capacity over multiple purification cycles with cleaning-in-place using 0.5 M NaOH.
For small scale purifications and initial screening in process development convenient pre-packed BabyBio affimAb 1 ml and 5 ml columns are available. WorkBeads affimAb resin can also be used for purifications in other formats, such as batch and centrifugation purifications.

  • Top performance dynamic binding capacity also at short residence times
  • Outstanding alkali stability with 0.5 M NaOH, extends the number of purification cycles
  • Excellent purity, recovery and reproducibility
  • Negligible protein A leakage
  • Convenient pre-packed 1 ml and 5 ml BabyBio™ columns

Resin description

WorkBeads are agarose based chromatographic resins manufactured by a proprietary method that results in porous beads with a tight size distribution and very high mechanical stability. Agarose based matrices have been successfully used for decades in biotechnology research from laboratory to production scale, due to their exceptional compatibility with biomolecules including proteins, peptides, nucleic acids and carbohydrates. WorkBeads resins are designed for separations requiring optimal capacity and purity.

The alkali stable recombinant protein A attached to the optimized basematrix is produced in E. coli under conditions free of components of animal origin and purified to high purity before coupling. This combination gives both high dynamic binding capacities for antibodies and the possibility for efficient cleaning-in-place with 0.5 M NaOH.

Characteristics of WorkBeads affimAb

Target substances

Antibodies (IgG), bound via the Fc-region

Matrix Rigid, highly cross-linked agarose
Average particle size¹ (Dv₅₀) 50 µm

Recombinant protein A expressed in E. coli using animal-free medium

Dynamic binding capacity² (DBC)

> 40 mg human lgG/ml resin

Max recommended flow rate³

300 cm/h

Chemical stability

Compatible with all standard aqueous buffers used for protein purification. Should not be stored at low pH for prolonged time. 

pH stability 3 – 10
Cleaning-in-place stability Up to 0.5 M NaOH
Storage 2 to 8°C in 20 % ethanol

¹The median particle size of the cumulative volume distribution.
². DBC was determined at 10% breakthrough (QB104) by frontal analysis with 1 mg/ml human polyclonal lgG in PBS, pH 7,4 AT 1,4 ml/min (245 cm/h. 2.5 minutes residence time)
³. Max recommended flow rate at 20°C using acqueous buffers. Decrease the max flow rate if the liquid has a higher viscosity. Higher viscosities can be caused by low temperature (use half of the max flow rate when operating at 4°C), or by additives (e.g., use half of the max flow rate for 20% ethanol)



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