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Institute of Biology Report on pH Meter Questionnaire

  • 1955

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The questionnaire results identified pH meter features that would broadly appeal to biologists.

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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Extent
  • 8 in. W x 13 in. L
Language
Inscription
  • (top right corner, first page) "ret. J. Leonard"
Subject
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Credit line
  • Courtesy of Science History Institute

Institutional location

Department
Collection
Series arrangement
  • Sub-series 3. Product Files
  • Series II. Business Activities Files
Physical container
  • Box 19, Folder 15

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Cite as

Institute of Biology. “Institute of Biology Report on PH Meter Questionnaire,” 1955. Beckman Historical Collection, Box 19, Folder 15. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/5712m734d.

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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.