Freeze drying, or lyophilizing, is an ideal method for evaporating or drying a heat sensitive sample, but it can be difficult to determine when the freeze drying process has reached complete dryness, or “end point.”
Wolfgang Peti, PhD, professor in the Department of Chemistry and Biochemistry at the University of Arizona, talks to contributing editor Tanuja Koppal, PhD, about the recent developments in chromatography techniques.