Close-up view of a police officer transferring a vial of blood to a technician for blood alcohol analysis at a laboratory associated with the Philadelphia Police Department. Per notations accompanying the photograph, the Perkin-Elmer Model F-40 Automated Gas Chromatograph visible to the left of the technician is used as a forensic tool to measure the blood alcohol levels of drunk-driving suspects.
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Perkin-Elmer Corporation. “Perkin-Elmer Gas Chromatograph in Use at Philadelphia Police Laboratory,” 1970–1979. Photographs from the Perkin-Elmer-Applera Collection, Box 5. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/ft848r657.
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