Chelating Ion-Exchange Resin

This article is compiled based on the United States Pharmacopeia (USP) – 2025 Edition

Issued and maintained by the United States Pharmacopeial Convention (USP)

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—Weak cation-exchange resin composed of styrene divinylbenzene copolymer containing paired iminodiacetate ions, which act as chelating groups in binding polyvalent metal ions. [Note—A suitable grade is available as Chelex® 100 Resin from www.bio-rad.com.]_{▲(USP 1-Dec-2019)}