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Genre Manuscripts Remove constraint Genre: Manuscripts Format Text Remove constraint Format: Text Rights In Copyright - Rights-holder(s) Unlocatable or Unidentifiable Remove constraint Rights: In Copyright - Rights-holder(s) Unlocatable or Unidentifiable Date Unknown Remove constraint Date: Unknown

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    • Undated

    Undated notes by an unknown author, although his person was very likely a Beckman Instruments employee.

    Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California citrus…

    • Personal Recollections of Arnold O. Beckman
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    The account focuses on the early days of Beckman's entrepreneurial endeavors, from Robert Millikan referring I. H. Lyons to Beckman for assistance with National Postal Meter Company inks through the renting of a new…

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    This account of Howard Cary's life covers the period from his birth to his initial contact with National Technology Laboratories and brief discussion of his later involvement with pH meter development. He devotes a fair…