DESCRIPTION
Concentrate weak acid anions such as carboxylates by using the Thermo Scientific™ Dionex™ SolEx™ SAX Polymer-Based SPE Cartridge. The stationary phase is comprised of a 22µm high surface area divinylbenzene resin particle grafted with an aromatic quaternary ammonium functionality and conditioned to a pH where the target analytes are charged (about 2 pH units above the pKa). The cartridge is designed for use with the Thermo Scientific™ Dionex™ AutoTrace™ 280 SPE system or other SPE instrumentation and vacuum manifolds.
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