LCGC Europe Application Note Alert Having trouble viewing this email? Click here Sample Prep IEX-MALS for Protein Separation and Characterization When SEC does not provide optimal separation of proteins for characterization by multi-angle light scattering, MALS can be coupled to ion-exchange chromatography. Solid-Phase Extraction of Organochlorine Pesticides and PCBs by EPA Method 608.3 A modified SPE method using UCT's large internal diameter C18 cartridges has been demonstrated for the extraction of organochlorine pesticides in water.   LC Mass-Based Isolation of Natural Product Impurities This application note describes the isolation of a natural product extract. Mass-selective detection was used to trigger collection of the desired compounds.   LC–MS Identification of Non-Covalent Metal Complexes by HILIC–MS Pyoverdines and their metal complexes were separated and identified by HILIC–MS/MS using an iHILIC®-Fusion column. The method is applicable in biological processes.