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Charts, diagrams, etc

Circuit Diagram, Beckman pH Meter, Laboratory Model

  • Dwg. No. CD-2000B

  • 1945-Jan-24

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In Copyright

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The diagram is annotated in red and blue ink, indicating first and second position.

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.

Property Value
Place of creation
Format
Genre
Extent
  • 11 in. W x 8.5 in. L
Language
Subject
Rights In Copyright
Rights holder
  • Danaher Corporation
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 18, Folder 26

View collection guide View in library catalog

Related Items

Cite as

“Circuit Diagram, Beckman PH Meter, Laboratory Model,” January 24, 1945. Beckman Historical Collection, Box 18, Folder 26. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/r781wg491.

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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.