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  4 items
  Pamphlets

  Beckman Model H Glass Electrode pH Meter

  • Bulletin 170

  • Circa 1950

  Promotional, color pamphlet for the Model H pH Meter.

  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…

  • Creator Of Work Beckman Instruments, inc.
  • Subject Hydrogen-ion concentration--Measurement--Instruments, Scientific apparatus and instruments, Beckman Instruments, inc.
• 

  4 items
  Pamphlets

  D2 Oxygen Analyzer for Safe Oxygen Therapy

  • Product Data Sheet O2—8120

  • 1950s

  Developed from a Linus Pauling design during WWII, the technology behind Beckman Instruments’ oxygen analyzers ended up doing such diverse jobs as monitoring astronauts’ respiration, maintaining packaged food safety,…

  • Creator Of Work Beckman Instruments, inc.
  • Subject Scientific apparatus and instruments, Oxygen--Measurement, Oxygen--Analysis, Beckman Instruments, inc.