3M™ Empore™ Cation Exchange-SR 47 mm Disk

Manufacturer 3M Bioanalytical

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Cation-SR is a poly(styrenedivinylbenzene) copolymer that has been modified with sulfonic acid.  Note that Cation-SR is not bonded to silica but is a 100% copolymeric particle that is spherical, porous and cross-linked.  The functional group imparts selectivity for cationic analytes, such as primary, secondary and tertiary amines.