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Digital Collections

Pamphlets

Beckman pH Meter (Laboratory Model) brochure

  • 1935 – 1940

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Public Domain

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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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Rights Public Domain Mark 1.0
Credit line
  • Courtesy of Science History Institute

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Department
Collection
Series arrangement
  • Sub-series 4. Subject Files
  • Series II. Business Activities Files
Physical container
  • Box 20, Folder 2

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Cite as

Beckman Instruments, Inc. “Beckman PH Meter (Laboratory Model) Brochure,” 1935–1940. Beckman Historical Collection, Box 20, Folder 2. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/ms35t952z.

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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.