Radium Selective, Strong Acid Cation Exchange Resin, Macroporous, Highly Crosslinked, Sodium Form

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ResinTech RSM-25 is a sodium form macroporous strong acid cation resin. It is WQA Gold Seal Certified for use with potable water. Its high crosslinking results in very high selectivity for radium on a one-time use basis. It does not contain barium, is pH agnostic, and does not require a minimum sulfate concentration. RSM-25 is intended for radium removal from otherwise potable waters that contain modest concentrations of hardness ions such as calcium.

  • Radium Reduction

  • Loading Formula (Radiation)

Typical Properties

Polymer Matrix Styrenic Macroporous
Ionic Form Sodium
Functional Group Sulfonic Acid
Physical Form Spherical Beads
Color Tan to Brown
Particle Size 16 to 50 US Mesh (297 - 1190 μm)
Minimum Sphericity 95%
Uniformity Coefficient 1.6
Reversable Swelling Na → Ca 3% to 5%
Temperature Limit 250°F (121°C)
Total Exchange Capacity (meq/mL) 1.8
Moisture Retention 45% to 55%
Shipping Weight 48 - 50 lbs/ft³ (769 - 801 g/L)
REACH Registered YES
Regenerability TRUE

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