Dive into the world of environmental contaminants and the often dubbed “forever chemicals,” PFAS, with this month’s online Rockville Science Tuesday lecture. Speaker Alix Rodowa, PhD will share about the  development of PFAS reference materials at NIST, as well as projects in development now and for the future. Er- and polyfluoroalkyl substances (PFAS) are immediate contaminants of concern and have been observed in consumer products, consumer byproducts (e.g., dust, wastewater, and landfill leachate), and environmental compartments, including humans and biota. As a result, routine monitoring methods, method development, and commercial analysis of these compounds have become more widely available. Dr. Rodowa is a member of the Organic Chemical Metrology Group at the National Institute of Standards and Technology in Gaithersburg, MD.