Praesto® CNBr resins offer a simple solution for ligand immobilization onto an agarose chromatography matrix, which can be utilized to make customized affinity media. This enables rapid scale-up from R&D to large-scale bioprocess production columns.  Purolite Life Sciences can also offer custom solutions through our use of jetting technology, enabling the precise control of any bead size.

The use of Cyanogen bromide (CNBr) pre-activated base matrices is a well-established, rapid and familiar technique for the coupling of bio-specific ligands to generate affinity chromatography purification media. This choice of pre-activation chemistry is well suited for research, diagnostic and academic applications.

Praesto® Pre-Activated Chromatography Resins - FAQs

Principal Applications

  • Protein purification (20-500 kDa)
  • Production of customized affinity chromatography media

Advantages

  • High productivity
  • High capacity
  • Enhanced pressure/flow performance
  • Secure, validated supply and regulatory support

Regulatory Approvals

  • Manufactured under cGMP conditions

Typical Packaging

  • Bulk Resin
  • Production-Scale OPUS® Columns
  • OPUS® Robocolumns®
  • OPUS® MiniChrom Columns
  • HT Columns

Typical Physical & Chemical Characteristics:

Polymer Structure Highly cross linked agarose
Appearance Spherical beads
Functional Group CNBr
Chemical stability After coupling - All commonly used aqueous buffers, 2M NaOH, 8M urea, 6M guanidine HCl, 30% isopropanol, 70% ethanol, 30% acetonitrile and commonly used detergents
Particle Size - µm 45, 65, 90 µm
Pressure/flow (min.) - at 3 bar in a 2.6 x 20 cm column (pressure-packed at 4 bar) 200 cm/h
Exclusion limit for globular proteins 10 7 Daltons
pH stability, CIP (short term) 2 - 11
pH stability, working range 3 - 11
Recommended Storage 2 - 8 °C
Recommended Storage 20% EtoH (after coupling)