General view of Senior Pollution Control Technician Tara Schultz inserting a stack gas sample via syringe into a Perkin-Elmer gas chromatograph in the pollution laboratory at a Bethlehem Steel Corporation plant in Indiana. Per notations accompanying the photograph, the gas chromatograph is used to separate, identify, and measure the sample's components in order to precisely monitor discharges and effluents as part of the facility's pollution control program.
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Perkin-Elmer Corporation. “Perkin-Elmer Gas Chromatograph in Use at Bethlehem Steel Laboratory,” 1970–1979. Photographs from the Perkin-Elmer-Applera Collection, Box 6. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/m326m272m.
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