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The Development of pH Instrumentation

  • 1950-Apr

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Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California citrus industry, who needed an accurate way to measure the acidity of his product. The resulting instrument kicked off rapid development not only of Beckman Instruments, Inc. but also of the electronic scientific instrument industry.

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  • 8.5 in. W x 11 in. L
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  • Courtesy of Science History Institute

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  • Sub-series 3. Product Files
  • Series II. Business Activities Files
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  • Box 19, Folder 20

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Scientific Biography
Arnold O. Beckman

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Beckman, Arnold O. “The Development of PH Instrumentation,” April 1950. Beckman Historical Collection, Box 19, Folder 20. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/z029p529v.

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The Science History Institute recognizes there are materials in our collections that may be offensive or harmful, containing racist, sexist, Eurocentric, ableist, or homophobic language or depictions. The history of science is not exempt from beliefs or practices harmful to traditionally marginalized groups. The Institute is engaged in ongoing efforts to responsibly present and address the evidence of oppression and injustice inextricable from the history of science. If you would like to learn more about our ongoing efforts or if you encounter harmful, inaccurate, or insufficient descriptions, please contact us at digital@sciencehistory.org.