ACE C18-AR and C18-PFP - Hplc.eu

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®ACEHPLC / UHPLC ColumnsThe Power of π...Scientific Led Stationary Phase Design16Electron Donating Groupseg NH 2 , NR 2 , alkyl, OCH 3OR, CH 3 , Ar etcSi e.g.δ+δ-Electron Rich RingSiC 6 H 6Classic π-πinteractionElectron Withdrawing Groupseg NO 2 , halides, NR 3+ , CO 2 H,CN, CO 2 R, SO 3 H, COH etcSie.g.Fδ-δ-Fδ+Fδ-δ-FFδ-Electron Deficient RingActivity: π-donor (π-base)Activity: π-acceptor (π-acid)How do we exploit these properties for new stationary phases?C18+Phenyl = ACE ® C18-ARC18+PFP = ACE ® C18-PFP
®ACEHPLC / UHPLC ColumnsUniquely Designed Stationary Phases17 ACE ® C18-AR (USP L1)− Ligand has C18 hydrophobic element PLUS phenyl character ACE ® C18-PFP (USP L1)− Ligand has C18 hydrophobic element PLUS PFP characterUltra-inert, ultra-pure silica particle technology as usedin all ACE ® products for high peak efficiency Available in 3, 5 & 10m, (ACE ® ) and 2m (ACE ® Excel TM )Multi-mode interaction mechanisms result in enhancedchromatographic selectivity giving the analyst newoptions for method development
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ACE C18-AR and C18-PFP - Hplc.eu

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