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  • Ion Exchange Resins Overview

    In Stock Brands:

    Purolite Ion Exchange Resins  Thermax Ion Exchange ResinsJacobi Ion Exchange ResinsResinTech Ion Exchange Resins

    Visit our PDF Library for technical specifications and product manuals on cation resins.

    Visit our SDS Library for safety data sheets on cation resins.

    Cation Resin

    Cation ion exchange resins may be light or dark in color.  Color variation in new cation has no impact on its performance. For drinking water applications look for WQA Gold Seal or NSF certified products.

    Cation resins by type are:

    Strong Acid Cation (SAC) resin are sulfonated copolymers of styrene and DVB.

    Weak Acid Cations (WAC) have a polyacrylic backbone.

    SAC and WAC resins are manufactured in different forms – macroporous and porous (gel).

    Cation resins in the Na+ form will exchange sodium for the following ions:

    In the H+ cation resin will exchange hydrogen for the following ions:

    Strong Acid Cation

    Gel type cation resin consists of clear or translucent beads, and is commonly used in standard applications such as softening. It has greater capacity and regeneration efficiency than macroporous cation. Gel type cation resin is often referred to by its cross-linkage percentage.

    Macroporous cation is opaque and commonly used in aggressive softening applications.

    Weak Acid Cation

    Although weak acid cation resin softens water it is never used in residential applications.

    Cation Exchange Process

    Softening

    Softening with cation resin is a simple exchange function.

    Iron Reduction

    Other positively charged metals such as ferrous iron and lead are also attracted to the cation resin and will be removed. These metals are not easily regenerated off and will reduce the softening capacity and life of the resin.

    Demineralization

    SAC in the hydrogen form (H+) in combination with strong base anion (SBA) in the hydroxide form (OH), is most often used for demineralization processes such as portable exchange tank (PEDI) operations. Hydrogen, not sodium, is exchanged for calcium, magnesium and sodium. (For more information please refer to section on demineralization for portable DI exchange operations.)

    Anion Resin

    Anion exchange resins are usually light in color.  Color variation in new anion has no impact on its performance. For drinking water applications look for WQA Gold Seal or NSF certified products.

    Visit our PDF Library for technical specifications and product manuals on anion resins.

    Visit our SDS Library for safety data sheets on anion resins.

    The most popular anion resins by type are:

    Anion resin in the Cl- will exchange chloride for the following:

    In the OH form anion resin will exchange hydroxide for the following:

     Mixed Bed Ion Exchange Resins – Cation (H)/Anion(OH)

    Visit our PDF Library for technical specifications and product manuals on mixed bed resins.

    Visit our SDS Library for safety data sheets on mixed bed resins.

    Deionization or Demineralized Water Applications

    Highly unlikely to be used by a home owner due to its aggressive nature, deionized water is commonly used in

    PEDI or SDI Business – DI Exchange Tanks

    The founders of Urbans Aqua have extensive experience having owned and operated the second largest DI business in the Mid-Atlantic region of the US.  We are delighted to share our knowledge with dealers who want to grow or need technical assistance with their DI businesses.

    Some tips:

     

    Urbans Aqua is a stocking wholesaler of Residential & Commercial Water Treatment Equipment and supplies including Ion Exchange Resin; Calgon & Jacobi Activated Carbon; Filterag Plus; GreensandPlus; Pyrolox Advantage; KDF; Birm; Sand/Gravel; Clack, Fleck & AqMatic valves; Stenner Pumps & Parts. 

    We work exclusively with water treatment dealers.