Robert Bills, Aerospace Fuels Lab chemist, points to the induction coil and torch of the inductively coupled plasma optical emission spectrometer (ICP/OES) in the Investigative Analysis Lab at Wright-Patterson Air Force Base, Ohio, Feb. 13, 2018. Bills explained how the ICP/OES has a similar principle to fireworks, where different colors emitted are related to the presence of certain metals. ( Air Force photo by Michelle Gigante)

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