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Alamo Brand (A4000) Cation Water Softening Resin 1 CF Bag

Product Code A4000

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This A4000 resin is a cation exchange water softening resin used in general water softening applications to remove calcium and magnesium hardness from water. It is blonde in color to reduce pigment leaching upon start up and has a 16 x 40 mesh size. This resin is made from polystyrene, is supplied in the sodium form, and contains 8 percent divinylbenzene for improved strength. It is certified to NSF/ANSI standard 61 by the Water Quality Association.


  • Bead size 16 x 50 mesh
  • Excellent bead integrity
  • Supplied in the sodium form
  • Specially designed for residential water treatment