ResinTech RSM-25 is a sodium form macroporous highly crosslinked strong acid cation resin. RSM-25 provides extended throughputs for radium removal applications. ResinTech RSM-25 is intended for single use radium removal applications. RSM-25 is supplied in the sodium form.


Polymer StructureStyrene/DVB
Polymer TypeMacroporous
Functional GroupSulfonic Acid
Physical FormSpherical Beads
Ionic Form (as shipped)Sodium Form
Total capacity> 1.8 meq/mL (Na Form)
Water Retention45 to 55 percent (Na Form)
Approximate Shipping Weight        49 lbs/cu.ft. (Na Form)
Screen Size Distribution 16 to 50 (U.S. Mesh)
Maximum Fines Content1 percent (less than 50 Mesh)
Minimum Sphericity90 percent
Uniformity Coefficient1.6 (Approximate)
Resin ColorTan

All resin/carbon purchases processed via this website will be samples only, packaged in 16oz. plastic jars.
For larger quantities please email

NOTE: Weights reflect an average packout weight over time. Actual weights may vary by +/- 1 lb.

Please allow up to 5 business days from the date of your order for processing. After processing is complete, your order will be shipped out according to the shipping option you chose when ordering. For orders being shipped outside of the USA, please allow 4 weeks due to possible delays through customs.

View Data SheetSDS File

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