Chromalite CGA50x2 is a chromatographic anion exchange resin with a polymer designed for small organic and inorganic compound separation and purification. It contains 50 μm styrenic resin beads crosslinked with 2% divinylbenzene (DVB). Our proprietary manufacturing method creates perfectly spherical beads with exceptional kinetic and packing properties.

Unlike similar products on the market, Chromalite CGA and CGC resins are supplied in highly pure form (very low extractables content) and do not require pre-treatment. As such they are suitable for pharmaceutical applications.

  Equivalent to:
- Dowex® 1X2 200-400 mesh (Dow)


CGA resins occasionally exhibit an amine odour after prolonged storage (this will not affect performance).

In such cases it is recommended to rinse the affected resin with sufficient volumes of water to remove the odour before putting the resin into service.

Principal Applications

  • Ion exchange chromatography
  • Desalting of biomolecules after fermentation
  • Suitable for inorganic, organic and biological molecule separation


  • High chemical stability
  • Low capacity
  • Small particle size for high performance
  • High purity
  • Exceptional kinetic and packing properties

Regulatory Approvals

  • Compliant with FDA regulation 21 CFR 173.25
  • Compliant with ResAP(2004) 3
  • Kosher
  • Halal
  • TSE/BSE/GMO free

Typical Packaging

  • 250 g
  • 1 kg

Typical Physical & Chemical Characteristics:

Supplied as Wet
Volume capacity (min.) 0.6 eq/l
Weight capacity (min.) 4 eq/Kg
Total moisture 70 - 85 %
pH Limit Stability 1 - 14
Optimal storage condition 2 - 20 °C
Ionic Form Cl-
Expiry date (from date of manufacture) 5 years
% Crosslinking 2
Appearance Pale yellow to dark yellow spherical beads
Functional Group Quatenary Ammonium
Particle size (90% in Range) 35 - 75 µm
Perfect Bead min. 95 %