Merck, 52738-U, Supelclean™ PSA SPE Bulk Packing

Retention Mechanism: Normal-phase and anion-exchange Sample Matrix Compatibility: Organic or aqueous solutions •Polymerically bonded, ethylenediamine-N-propyl phase that contains both primary and secondary amines •A weak anion exchanger with a pKa of 10.1 and 10.9 •Similar to aminopropyl SPE phases (NH₂) in terms of selectivity, but has a much higher capacity due to presence of secondary amine (0.98-1.05 meq/g) •Strong affinity and high capacity for removing fatty acids, organic acids, and some polar pigments and sugars when conducting multi-residue pesticide analysis in foods •Has been shown to significantly reduce matrix-enhancement effects encountered during the GC analysis of food products •Tested for superior cleanliness using GC-FID and GC-MS •Bidentate nature of ligand allows for chelation