General view of an unidentified employee operating a Perkin-Elmer Atomic Absorption Spectrophotometer with a heated graphite atomizer (HGA) attachment in use at a Calgon Water Management laboratory facility. Per notations accompanying the photograph, the spectrophotometer is used to analyze concentrations of iron, copper, and aluminum in high purity waters.
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Perkin-Elmer Corporation. “Perkin-Elmer Instruments in Use at Calgon Water Management Laboratory,” 1970–1979. Photographs from the Perkin-Elmer-Applera Collection, Box 4. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/bk128b833.
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