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.
Loading Formula (Radiation)
|Polymer Matrix||Styrenic Macroporous|
|Functional Group||Sulfonic Acid|
|Physical Form||Spherical Beads|
|Color||Tan to Brown|
|Particle Size||16 to 50 US Mesh (297 - 1190 μm)|
|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)|
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