DOWEX MARATHON™ Ion Exchange Resins

DOWEX MARATHON™ Ion Exchange Resins with uniform particle size beads provide improved performance over standard-grade resins with Gaussian particle size distribution. Both cation and anion exchange resins in both gel and macroporous polymer structures are available. DOWEX MARATHON resins are ideal for use in AMBERPACK™ and UPCORE™ Packed Bed Systems used to demineralize water in industrial plants or in mixed bed polishers.


DOWEX MARATHON™ C Na Ion Exchange Resin is a gel, uniform particle size strong acid cation resin designed for use in industrial and residential softening and demineralization applications. The small uniform beads exhibit faster kinetics than conventionally sized resins. The improved kinetics typically results in improved regeneration efficiency, higher operating capacity, reduced regenerant usage and less wastewater.

Document Links:

Used In:

  • Residential softening
  • Institutional softening


  • Excellent physical stability
  • High operating capacity
  • Low sodium leakage
  • Low pressure drop


  • Asia Pacific
  • Europe
  • Latin America
  • North America