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Place California--South Pasadena Remove constraint Place: California--South Pasadena Format Image Remove constraint Format: Image Date 1950 Remove constraint Date: <span class='single'>1950</span>

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    • Bulletin 202-C
    • 1950s

    Developed from a Linus Pauling design during WWII, the technology behind Beckman Instruments’ oxygen analyzers ended up doing such diverse jobs as monitoring astronauts’ respiration, maintaining packaged food safety,…

    • Bulletin 170
    • circa 1950

    Promotional, color pamphlet for the Model H pH Meter.

    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…

    • 1950s

    The advertisement touts the features of Beckman glass electrodes and the company's position in the instrumentation field.

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

    • Bulletin 168-B
    • 1950-Oct

    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…

    • 1950-Apr

    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…

    • circa 1950

    This is Helipot Corporation's Meridian Avenue location.

    The Helipot Corporation was founded during World War II by Arnold O. Beckman of Beckman Instruments (at that time still National Technical Laboratories) to keep…

    • Beckman Reprint R-38
    • 1950-Jun

    Beckman Instruments reprinted and distributed this paper, originally published in Analytical Chemistry Vol. 22, No. 6, June 1950.

    • 1950-Jul

    Staff and representatives pose outside the Helipot Corporation's Meridian Avenue location.

    The Helipot Corporation was founded during World War II by Arnold O. Beckman of Beckman Instruments (at that time still…

    • 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…

    • 1950-May

    This series of photographs depicts the aftermath of a fire that swept through the National Technical Laboratories building in South Pasadena. Most are unattributed, but Hank Hoag is identified as the photographer in one…