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Creator Donner, Walter Remove constraint Creator: Donner, Walter

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    • 1955-Aug-05

    Mass spectrometers measure the mass of sample components after ionization.

    Walter Donner's work with Beckman Instruments including oversight of the development of medical monitoring equipment for the Apollo, Mercury,…

    • 1961-Dec-20

    Beckman's Space Engineering Group contracted with NASA to design a gas chromatograph to analyze the atmosphere within a spacecraft's cabin. The prototype device weighed under 12 pounds and used under 10 watts of power.

    • Case Color for 9600 PH Meter
    • 1956-Sep-26

    In this memo, Walter Donner discussed the color and material to be used for the Zeromatic's case.

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

    • Evaluation Study of Twenty-five Zeromatic pH Meters
    • 1958-Sep-10

    The memo discusses a study of Zeromatic pH meters and includes a handwritten table of data.

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

    • 1962

    This instrument was designed to analyze the atmospheric composition within a spacecraft's cabin during the Apollo missions.

    • Minutes of Model G Product Meeting
    • 1956-Oct-10

    Memo describes an meeting in which Beckman Instruments staff discussed making changes to the Model G pH meter in order to reduce cost.

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