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Subject Forensic sciences Remove constraint Subject: Forensic sciences

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    • 1970s

    General view of Ernest Bartha, director of the Elyria City Health Department Laboratory, injecting a drug evidence sample into a Perkin-Elmer gas chromatograph. Per notations accompanying the photograph, the instrument…

    • 1976-Sep-23

    This press release announcing the discontinuation of the DU spectrophotometer served as a retrospective of the instrument's development and significance.

    The first Beckman Instruments DU Spectrophotometer was developed…