Atanas V. Koulov is the Head of Analytical Development and Quality Control, Drug Product Services at Lonza in Switzerland. His scientific career has focused on surfactants as protective excipients and includes eight years of work in the biopharmaceutical industry. Dr. Koulov’s research is primarily concerned with understanding and preventing aggregation, as well as measuring and characterizing undesired byproducts of surfactant degradation. Dr. Koulov has co-organized and participated in symposia and conference sessions dedicated to surfactants. He has published extensively in the field of protein aggregation and particles and is the immediate past chair of the American Association of Pharmaceutical Scientists Protein Aggregation & Biological Consequences Focus Group.