Robert Bills, Aerospace Fuels Lab chemist, places a sample tube in the sample tray of the inductive coupled plasma optical emission spectrometer (ICP/OES) as part of a routine job in the Investigative Analysis Lab at Wright-Patterson Air Force Base, Ohio, Feb. 13, 2018. The ICP/OES detects the presence of certain metals in a sample. ( Air Force photo by Michelle Gigante)

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Keywords: aerospace, analysis, chemist, chemistry, chromatogram, fluid, fuels, hydraulic, investigative, lab, routine