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Digital Collections

Photographs

Beckman Expandomatic pH Meter

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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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Extent
  • 10 in. W x 8 in. L
Subject
Rights In Copyright - Rights-holder(s) Unlocatable or Unidentifiable
Credit line
  • Courtesy of Science History Institute

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Collection
Series arrangement
  • Series X. Photographic Materials
  • Sub-series 3. Photo Albums
Physical container
  • Box 83

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Cite as

“Beckman Expandomatic PH Meter,” n.d. Beckman Historical Collection, Box 83. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/x059c7507.

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