Praesto Q90 is an agarose-based strong anion exchange resin, designed for large scale biomolecule purification, including proteins, peptides and oligonucleotides. The relatively large particle size (90 µm) makes Praesto Q90 ideal for capture or intermediate purification of proteins when large sample volumes needs to be processed within a limited time frame.

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Principal Applications

  • Protein purification
  • MAb Purification

Advantages

  • Excellent dynamic binding capacities for high-productivity and scalability
  • Excellent pressure/flow performance
  • High resolution/selectivity
  • Excellent chemical and physical stability
  • Secure, validated supply and regulatory support

Regulatory Approvals

  • Manufactured under cGMP conditions

Typical Physical & Chemical Characteristics:

Polymer Structure Highly cross linked agarose
Appearance Spherical beads
Functional Group Quaternary amine
Chemical stability All commonly used aqueous buffers. 1M NaOH, 8M urea, 6M guanidine hydrochloride, 30% isopropanol and 70% ethanol
Avoid Oxidising agents, anionic detergents
Ionic capacity - resin 0.14 - 0.18 mmol/ml
Ionic capacity - medium 0.14 - 0.18 mmol Cl⁻/ml
Particle Size - µm 90 µm
Dynamic Binding Capacity (min.) - 6 minutes residence time 50 BSA/ml
Pressure/flow (min.) - at 3 bar in a 2.6 x 20 cm column (pressure-packed at 4 bar) 800 cm/h
pH stability, CIP (short term) 2 - 14
pH stability, working range 3 - 13
Recommended Storage 4 - 30 °C
Recommended Storage 20% ethanol