elected as the first chair. He played a key editorial role in judging which analytical methods would be published as ACS standards, with colleagues referring to him as "Supreme Court of Chemistry". He additionally achieved stature with Geological Survey and the Bureau of Standards. 1920s: The Committee began publishing specifications for chemical reagents and test methods in scientific journals. At this point, analytical methods were primarily what we now consider to be “Classical Wet Methods". 1950: The 1st edition of Reagent Chemicals was published and introduced the application of analytical instrumentation. Reagent Chemicals had significant impact on chemical laboratories by enabling greatly improved accuracy and sensitivity. 2000: The 9th edition was published and continued a trend toward eliminating or simplifying tedious classical procedures for trace analyses and adding instrumental methods, where possible. 2006: The release of the 10th edition introduced Monographs for Standard-Grade Reference Materials. 2016: The 11th edition introduces heavy metal test methodologies utilizing ICP-OES. 2017: The new online edition of Reagent Chemicals, based on the 11th edition in print, improved the speed and simplicity with which the Committee communicates updates and changes by bringing the entire reference resource to the ACS journals platform. Committee The ACS Committee on Analytical Reagents is responsible for the Reagent Chemical publication and standards included within. The committee includes members from chemical and pharmaceutical manufacturers, academia, and government organizations (NIST, EPA, USGS). Notes References Reagent Chemicals American Chemical Society Chemistry reference works 1950 in science