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Creator Beckman, Arnold O. Remove constraint Creator: Beckman, Arnold O. Creator Lyons, I. H. Remove constraint Creator: Lyons, I. H. 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

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    • 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…

    • 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-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…