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Department Archives Remove constraint Department: Archives Subject Beckman Instruments, inc. Remove constraint Subject: Beckman Instruments, inc.

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    • 1930s

    This garage was the first location of the National Inking Appliance Company, founded by the National Postal Meter Company in 1934 to manufacture the new, nonclogging inking device invented by Arnold O. Beckman. This…

    • 1933

    In this letter, Glenn Joseph reports that the vacuum-tube amplifier in the early Beckman pH meter model is (still) not functioning properly. One of the fixes he proposes is replacing the vacuum tubes with a glass…

    • circa 1933

    Glenn Joseph writes to Dr. Beckman about the process of finding the right buffer to use in the new glass electrodes inside the pH meter. The identify of the "Dr. Dupont" referenced in this letter is uncertain.

    Arnold…

    • 1934-Jun-25

    Letter regarding the possible contents of and functioning of the glass electrode in the first pH meter models.

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

    • 1934-Apr-09

    Directions for calibrating a McLeod gauge for use with the early model of the Beckman pH meter. This letter is likely related to the handwritten McLeod gauge diagrams and calculations also found in this folder. At the…

    • 1934-Jun-19

    A bill sent by Arnold Beckman to W. E. Baier, covering the cost of a "glass-electrode apparatus," which was included in the first Beckman pH meter.

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

    • 1934-Apr-10

    Invoice from Arnold O. Beckman to W. E. Baier
    for developing and calibrating McLeod gauges and glass electrodes -- components involved in the early Beckman pH meter.

    Arnold Beckman invented his first pH meter in 1934…

    • 1934-Jun-22

    This letter spells out the instrument maintenance and upgrades that the California Fruit Growers Exchange believe are included with the cost of developing the "glass electrode apparatus" (an early prototype of the…

    • 1934-Jan-09

    This job schedule is a snapshot of the work being done by NTL in January, 1934. This work included the important pH meter development for the California Fruit Growers Exchange, of course, but also a project for Lee de…

    • 1950
    • 1940
    • 1934 – 1935
    • 1946
    • Undated
    • 1949

    A Pasadena garage was the first home of the National Postal Meter Company, founded by Arnold Beckman in 1934. The company soon became National Technical Laboratories, with a focus on pH meters. In 1935, the company…

    • 1935-May-31

    The contract outlines details (including salary, confidentiality, and intellectual property rights) of Howard Cary's work for Arnold Beckman.

    Howard Cary (1908-1991) was a Caltech-educated engineer who joined National…

    • 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-Apr-30

    Response to an earlier letter from Dr. Duschak, asking if Dr. Beckman's new "acidimeter" would be appropriate for determining the pH of vegetable juices. Beckman describes some of the recent changes to the instrument,…

    • 1935-Oct-18

    Murdock references receipt of correspondence and a blood sample from Noyes, expresses pleasure at Millikan's interest in his work, and discusses real estate matters, including the erection of apartment buildings.

    • 1935-Nov-03

    Beckman discusses cancer treatment options for his friend and colleague, Dr. Amos A. Noyes, and offers to provide Glover with a pH meter.

    • 1935-Oct-14

    The letter touches on Arthur Noyes's medical condition and discusses problems with an instrument demonstration caused by residue in electrodes. Beckman was a friend and colleague of Dr. Noyes and was seeking medical…

    • 1935-Sep-07

    Anderson writes from National Technical Labatories to Arnold Beckman, providing him with an update about "acidimeter" production and pre-sales interest while Beckman is away in New York City. He notes that the first…

    • 1935-Aug-30

    Beckman thanks Evans for his hospitality during a trip to Denver, Colorado to sell the new pH meter and hopes that Evans will become a distributor for the instrument. Beckman's stops in Denver included Coors Porcelain…