General view of chemist Harvey Beatty operating a Perkin-Elmer Model 503 Atomic Absorption Spectrophotometer at the Kellogg Company Quality Assurance laboratory located in Battle Creek, Michigan. Per notations accompanying the photograph, the spectrophotometer is used to analyze grain samples for possible arsenic contamination, part of Kellogg's efforts to ensure against contamination of its products and test for the presence of necessary nutrient levels.
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Perkin-Elmer Corporation. “Perkin-Elmer Atomic Absorption Spectrophotometer in Use at Kellogg's Laboratory,” 1970–1979. Photographs from the Perkin-Elmer-Applera Collection, Box 4. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/pv63g127g.
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