Hybrid Amphoteric Ion Exchange Media, Sodium & Hydroxide Forms

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ResinTech SIR-2000 is a gel strongly basic anion resin that also has weakly acidic functionality. Its amphoteric nature results from the resin’s two opposing functional groups – strong base anion & weak acid cation – which are interwoven and self-absorbed within the polymer structure of each resin bead. SIR-2000 is well-suited for chromatographic separation processes that require ion retardation, and can also be used to remove salts from organic solutions.

  • Chromatographic Separations

Typical Properties

SKU SIR-2000
Polymer Matrix Styrenic Gel
Ionic Form Sodium & Hydroxide
Functional Group Trimethylamine and Carboxylic Acid
Physical Form Spherical Beads
Color Amber
Particle Size 40 to 100 US Mesh (2000 - 400 μm)
Minimum Sphericity 93%
Uniformity Coefficient 1.4
Temperature Limit 140°F (60°C)
Total Exchange Capacity (meq/mL) 1.8
Moisture Retention 35% to 45%
Shipping Weight 45 - 47 lbs/ft³ (721 - 753 g/L)
REACH Registered YES
Regenerability TRUE

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