Dr. Christopher Riley, president of Riley and Rabel Consulting Services, Inc., will give a two-part seminar on Friday, November 19th, from 3:00 to 5:00 PM in CHEM 144. The title of the seminar is "HPLC is the Worst Technique for the Quantitative Analysis of Drugs and Drug Impurities – Except for all the Others: Determination of Vancomycin Impurities in Dry Powder Inhalation Product – A Case in Point!"

The first half of the seminar will be an informal discussion of some of the requirements for analytical methods in a regulated industry. The second half will be a presentation on the development and validation of a method for the determination of the impurities in vancomycin and the problems caused by the loss of separation of three critical pairs of peaks after almost two years of use and analysis of 1000s of samples.