ResinTech SIR-700-HP is a granular gel weak base anion resin with unique epoxy polyamine functionality. It utilizes a secondary mechanism for chromate removal that causes chromium to precipitate inside the resin matrix when the feed pH is slightly acidic. ResinTech SIR-700-HP is intended for all chromate removal applications. SIR-700-HP is  shipped in the acid chloride form and can be special ordered in the acid sulfate form (when ordered as SIR-700-SO4).

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NSF/ANSI-61 Certified for Material Safety
WQA Gold Seal Certified when ordered as SIR-700-HP 


Polymer StructureEpoxy polyamine
Polymer TypeGel
Functional GroupMixed amines
Physical FormGranules
Ionic Form (as shipped)Acid Salt
Total Capacity>2.1 (FB Form)
Water Retention52 to 58 percent (FB Form)
Approximate Shipping Weight        40 lbs/cu.ft. (FB Form)
Screen Size Distribution 12 to 40 (U.S. Mesh)
Maximum Fines Content1 percent (less than 50 Mesh)
Uniformity Coefficient2.0 (Approximate)
Resin ColorAmber to yellow

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.

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