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Digital Collections

Photographs

Beckman Zeromatic IV pH Meter

  • Circa 1980

Rights

Unknown Rightsholder

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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.

Property Value
Photographer
Format
Genre
Extent
  • 10 in. W x 8 in. L
Inscription
  • (verso) "use with story 22"
  • (verso) "121277 19. Karjalas' Photo Vision.231 E. Imperial Hwy. Suite 260. Fullerton, CA 92635. (714) 992-1210."
  • (verso) "48 1/2 %"
  • (verso) "PP03 94"
  • (lower right corner) "12 - B"
Subject
Rights In Copyright - Rights-holder(s) Unlocatable or Unidentifiable
Credit line
  • Courtesy of Science History Institute

Institutional location

Department
Collection
Series arrangement
  • Series X. Photographic Materials
  • Sub-series 3. Photo Albums
Physical container
  • Box 79

View in library catalog

Related Items

Cite as

Karjalas' Photo Vision. “Beckman Zeromatic IV PH Meter,” circa 1980. Beckman Historical Collection, Box 79. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/2n49t173w.

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