Darren Williams received a PhD in chemistry from Oregon State University in 1998 and a BS in chemistry from the University of Texas at Austin in 1992. He began his academic career at West Texas A&M University (1997–2001) and continued it at Sam Houston State University (2004–present). The interim was spent in industry at BWXT Pantex in Amarillo, Texas (2001–2004). Dr. Williams has applied infrared and Raman spectroscopy to polymer-bound explosive analysis, to surface analysis, and to cleaning verification. Lately, his interests have turned to solvent blend modeling, formulation, and analysis as it relates to industrial cleaning of medical devices, aerospace components, and printed circuit boards. He has published over two dozen articles and book chapters. Dr. Williams is a member of the American Chemical Society and the Society for the Advancement of Material and Process Engineering, and he is the faculty advisor for the J. C. Stallings’ Chemical Society and chapter director for Ratio Christi at Sam Houston State University.