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Beckman Model G pH Meter

  • Introduced 1934
  • Manufactured by Beckman Instruments
    Made in South Pasadena, California
  • 11.75 in. H x 11.25 in. W x 8.5 in. D
    Walnut, steel, porcelain, plastic, paper, rubber
  • Not on display
  • Gift of Dr. F. William Sunderman
  • 2003.510.001


A pH meter is an electronic voltmeter that uses a pH-responsive electrode to give a direct conversion of voltage differences to differences of pH at the temperature of the measurement. The Model G was introduced in 1934 by Arnold Beckman and was one of the first "table top," or portable, laboratory instruments available.

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Arnold O. Beckman

CHF’s Beckman Center for the History of Chemistry was started with a generous grant from the Arnold and Mabel Beckman Foundation in 1987.



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