National Chromatography Inco
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Hi-Purit SAX SPE (Solid Phase Extraction) cartridges are typically used for anion exchange cleanup in sample preparation.
SAX = Strong Anion Exchange
The stationary phase in SAX cartridges is functionalized with quaternary ammonium groups, which carry a permanent positive charge.
These groups interact strongly with negatively charged analytes (anions) through ionic interactions.
Hi-Purit SAX SPE Cartridges – Common Uses
These cartridges are used to retain and isolate acidic or anionic compounds from complex sample matrices. Common uses include:
Environmental Analysis
Extraction of:
Phenols
Sulfonic acids
Carboxylic acids
Pesticides (acidic ones)
Anionic surfactants
Perfluorinated compounds (e.g., PFOA, PFOS)
