Stefan Brand | Authors

A new technique was developed based on liquid chromatography coupled with tandem mass spectrometry to analyze drugs that are not part of current immunoassay screening, specifically zolpidem, zopiclone, and zaleplone, or "z-drugs."

How to make gradient separations faster without changing the separation

Guest author Stefan Brand and John Dolan take a look at how to speed up gradient separations while avoiding common errors.