Close-up view of employee Larry Weathington operating a Perkin-Elmer Sigma 1 Gas Chromatograph System in a test laboratory associated with the Georgia Power Company. Per notations accompanying the photograph, the system is used to interpret the results of analyses of the cooling and insulating oils used in the company's substation transformers. Notably, such analyses pinpoint the causes of potential failures in the transformers, thus allowing for preventative maintenance without power shutdowns.
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Perkin-Elmer Corporation. “Perkin-Elmer Gas Chromatograph in Use at Georgia Power Company,” 1970–1979. Photographs from the Perkin-Elmer-Applera Collection, Box 5. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/4j03d056k.
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