General view of a work bench in the factory control work area of the Dearborn Chemical Company's 35th Street Laboratory facility and manufacturing plant. The employee visible in the photograph is identified as W. Crocker. Per notations accompanying the photograph, titration is being employed to test the alkalinity (a chemical measurement of a water's ability to neutralize acids) of water samples sent to the laboratory for analysis.
Founded in 1887, the Dearborn Chemical Company was a corporate ancestor of BetzDearborn, Incorporated best known for manufacturing water treatment chemicals for use in boilers and cooling towers.
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Dearborn Chemical Company. “Laboratory Work Bench at Dearborn Facility,” circa 1924. BetzDearborn, Incorporated Records, Box 17, Folder 13. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/qj72p818c.
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