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Subject Air--Pollution--Research Remove constraint Subject: Air--Pollution--Research

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    • 1972-Mar-27

    General view of chemist William A. Lonneman preparing an air sample for analysis by three Perkin-Elmer gas chromatographs in an Environmental Protection Agency (EPA) mobile laboratory. Per notations accompanying the…

    • 1970s

    General view of employee Lloyd Monkman using a Perkin-Elmer Atomic Absorption Spectrophotometer to analyze the lead content of an airborne particulates sample in a laboratory at the Chemistry Division of the Air…