ResinTech SIR-100-HP is a chloride form macroporous nitrate selective strong base anion resin. SIR-100-HP has a unique functionality that increases selectivity for nitrate and decreases selectivity for sulfate. This results in higher operating capacity, lower leakage, and freedom from nitrate dumping if operated past sulfate break. SIR-100-HP is intended for all nitrate removal applications, and can also be used to remove perchlorate. SIR-100-HP is supplied in the chloride form.


NSF/ANSI-61 Certified for Material Safety


Polymer StructureStyrene/DVB
Polymer TypeMacroporous
Functional GroupTrimethylamine
Physical FormSpherical Beads
Ionic Form (as shipped)Chloride Form
Total Capacity ≥ 0.9 meq/mL
Water Retention46 to 56 percent (Cl Form)
Approximate Shipping Weight        41 lbs/cu.ft. (Cl Form)
Screen Size Distribution 16 to 50 (U.S. Mesh)
Maximum Fines Content1 percent (less than 50 Mesh)
Minimum Sphericity95 percent
Uniformity Coefficient1.6 (Approximate)
Resin ColorWhite to tan

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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