Chromalite CGA and CGC chromatographic ion exchange are polymers for small organic and inorganic compound separation and purification. Chromalite® CGA and CGC resins are spherical, uniform and highly purified chromatographic ion exchange resins for column separations covering all ranges of particle sizes and applications, from laboratory to plant scale. This range of polymers made of styrene crosslinked with various percentages of divinylbenzene (DVB) is produced by a proprietary manufacturing technology that creates whole, perfectly spherical beads with exceptional kinetic and packing properties for chromatographic separations. Differently for 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 and can be used as they are for pharmaceutical applications.

  Equivalent to:
- Dowex® 1X4 200-400mesh


Principal Applications

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


  • High chemical stability
  • Medium capacity
  • Small particle size for high performance
  • highly purified chromatographic resins
  • Exceptional kinetic and packing properties for chromatographic separations.

Regulatory Approvals

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

Typical Packaging

  • 250g
  • 1Kg

Typical Physical & Chemical Characteristics:

Appearance Pale yellow to dark yellow spherical beads
Functional Group Quaternary Ammonium
Supplied as Wet in Cl- form
Volume capacity (min.) 1 eq/l
Weight capacity (min.) 4 eq/Kg
Particle size (90% in Range) 35 - 75 µm
Particle size (90% in the range) 200 - 400 mesh
Mean Diameter 50 - 60 µm
Uniformity Coefficient (max.) < 1.5
Total moisture 55 - 70 %
pH limit stability 1 - 14
Optimal storage condition 2 - 20 °C
Ionic Form Cl-
Expiry date (from date of manufacture) 5 years
% Crosslinking 4