General view of an unidentified employee operating a Perkin-Elmer Model 5000 Inductively Coupled Plasma atomic emission analyzer at the Kellogg Company Corporate Quality Sciences laboratory located in Battle Creek, Michigan. Per notations accompanying the photograph, emission spectroscopy analysis, along with atomic absorption spectroscopy, was used to track the presence of trace minerals in Kellogg food products.
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Perkin-Elmer Corporation. “Perkin-Elmer Instruments in Use at Kellogg Company Laboratory,” 1970–1979. Photographs from the Perkin-Elmer-Applera Collection, Box 4. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/j96021477.
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