ResinTech BSM-50 is a borate form  hybrid anion resin selective for silica and antimony. BSM-50contains hydrated iron oxide crystals monatomically dispersed throughout the polymer. It absorbs antimony, silica, and other contaminants by a combination of ion exchange and adsorption. ResinTech BSM-50 is intended for removing trace levels of antimony and can also be used to remove silica from borated process waters. BSM-50 is supplied in the borate form. 


Polymer StructureStyrene/DVB
Polymer TypeGel
Functional GroupHybrid
Physical FormSpherical Beads
Ionic Form (as shipped)Borate
Water Retention35 to 50 percent (BO Form) 
Approximate Shipping Weight        51 lbs/cu.ft. (BO Form)
Screen Size Distribution 16 to 50 (U.S. Mesh)
Maximum Fines Content1 percent (less than 50 Mesh)
Minimum Sphericity93 percent
Uniformity Coefficient1.6 (Approximate)
Resin ColorBlack

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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