Mr. Zerlaut is a graduate of University of Michigan in Chemistry. Serving after graduation at the Army Ballistic Missile Agency (ABMA), he was cited for development of UV-resistant reflective & emissive coatings for temperature control of early US satellites. Remaining with the Army as a civilian chemist, he became employed by NASA when ABMA became the George C. Marshall Space Flight Center in 1960. In 1962 he joined ITT Research Inst.(IITRI) in Chicago and continued research on materials for use in the space environment, specializing in space ultraviolet effects on materials. He became Manager of Polymer Research in 1968. In 1973, Mr. Zerlaut and an associate purchased DSET Laboratories in Phoenix Arizona, which grew to become the well-known materials testing and outdoor weathering laboratory that it is today. In addition to managerial responsibilities as president and co-owner, he specialized in accelerated outdoor weathering research, optical property measurement of surfaces, and solar radiometry. On selling DSET in 1991, he formed SC-International to specialize in technical consulting and the export/import of scientific instruments. Mr. Zerlaut is a Life Fellow of the American Institute of Chemists (AIC), a member of the American Chemical Society (ACS), and a Fellow of the American Society for Testing and Materials (ASTM). He’s a long-time member of the NIST-advisory Council on Radiation Measurements (CORM), the American Meteorological Society (AMS), and other organizations. He has chaired the AIC’s National Committee on Accreditation, and in May 1973 was presented AIC’s Presidential Citation of Merit for developing a national program on certification of chemists. He was a member of the U.S. Technical Advisory Group (TAG) for ISO/TC 61 Plastics continuously from 1974 to 1992. He was the founding member of the U.S. Tag for ISO/TC 180 on Solar Energy in 1980 and Head of Delegation from 1980 until 1992. Mr. Zerlaut chaired ASTM Committee E-44 on Solar Energy Conversion from its formation in 1978 until 1984. In 1987 he was elected a Fellow of ASTM on the occasion of receiving the Award of Merit. He has served on the Board of Directors of the American Institute of Chemists (1970s), Solar Energy Industries Assoc. (1980s) and Kipp & Zonen, Inc. (2002-2004). He has most recently chaired ASTM Subcommittee G3.09 on Radiometry standards and CIE TC 2-17 on Solar Simulation. Mr. Zerlaut has nearly 100 publications, patents and technical articles to his credit. He is an IQA-credentialed Lead Assessor for Laboratory Quality Systems and, on behalf of A2LA, has performed nearly 550 assessments since 1993. His technical expertise includes mechanical and chemical testing of automotive components, plastics, rubber and fasteners; design of instruments for measurement of ultraviolet and solar radiation, and reflectance, transmittance and emittance of surfaces; measurement of automotive and commercial lighting (photometry); photovoltaics; fire/flammability testing; and solar thermal technologies.  Mr. Zerlaut presented the Franc Grum Memorial Lecture (A History of Standardization in Solar and Ultraviolet Radiometry) at the May 2007 CORM meeting at which time he also presented a paper “Color Measurement and ISO/IEC 17025.”