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Creator Beckman, Arnold O. Remove constraint Creator: Beckman, Arnold O. 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 Subject Hydrogen-ion concentration--Measurement--Instruments Remove constraint Subject: Hydrogen-ion concentration--Measurement--Instruments

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    • 1947-Aug-15

    This letter includes a report on existing Beckman trademarks as of 1947, including information on the "acidimeter" and the point at which that instrument became known as the pH meter (1935).

    • 1937-Aug-17

    The letter discusses Beckman's scheduled meetings, marketing strategies for the pH meter, and interest in postal meters.

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

    • 1937-Aug-21

    The letter was written during a multi-city trip, most likely in Pittsburgh or New York. Beckman discusses the cases of the instruments, and his desire to replace metal cases with wood; pricing of the instruments; and…

    • 1937-Aug-25

    This letter, written while Arnold Beckman was on a multi-city trip promoting his pH meter, concerns strategies for marketing the instruments and concern about the friction between a salesman and distributor.

    Arnold…

    • 1937-Dec-07

    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…

    • 1937-Aug-26

    In this letter, Evans discusses a new electrode design for use in Beckman 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…

    • 1935-May-31

    Lyons gives Beckman advice about personnel decisions and discusses early sales of the "acidimeter."

    Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH meter in 1934 and thus began…

    • 1935-Jun-03

    Though unsigned, context indicates that this letter was written by Beckman.

    Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH meter in 1934 and thus began a long career…

    • 1935-Jun-23

    This letter includes discussion of personnel issues and policies. Lyons expresses approval for the "Beckman Acidimeter" name.

    Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH…

    • 1935-Aug-29

    Regarding Beckman's business travels to meet with a potential acidimeter distributor, A. S. Aloe Co., and Drs. Ball and Rodewald at the Washington University in St. Louis.

    Dr. Arnold O. Beckman (1900-2004) invented the…

    • 1935-Aug-29

    Regarding Beckman's business travels to meet with two potential acidimeter distributors, Central Scientific Co. and Sargent Co.

    Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH…

    • 1935-Sep-30

    The letter discusses shipment of wheat germ, expenses; demonstrations of the acidimeter at the Pennsylvania General Hospital, University of Pennsylvania, the Department of Agriculture, and the Bureau of Standards;…

    • 1935-May-03

    Duschak comments on the price of the pH meter (high, but in line with comparable instruments) and inquires whether or not the "acidimeter" could be sold again after his project is finished.

    Arnold Beckman invented his…

    • 1935-Apr-26

    One of the earliest inquiries into using one of Arnold Beckman's newly invented pH meters.

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

    • 1935-Jun-23

    In this letter, Beckman discusses acidimeter production, personnel issues, patent applications, and the naming of the instrument.

    Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH…

    • Personal Recollections of Arnold O. Beckman
    • Undated

    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…