Arnold Beckman offers a scathing critique of Herring's performance as a salesman of pH meters.
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.
|Original file type||TIFF|
|Rights||In Copyright - Rights-holder(s) Unlocatable or Unidentifiable|
|View in library catalog|
Beckman, Arnold O. “Letter from Arnold Beckman to Thomas Herring,” December 7, 1937. Beckman Historical Collection, Box 14, Folder 9. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/5h73pw43z.
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