Skip to Content
You searched for
Search
Subject Hydrogen-ion concentration--Measurement Remove constraint Subject: Hydrogen-ion concentration--Measurement

Search Constraints

Search Results

    • 1985-Apr-23

    This interview, the first of several with Arnold Beckman conducted by the Chemical Heritage Foundation, begins with a discussion of Beckman's teenage experience as an industrial chemist at a local gas works in…

    • 1985-Jul-23

    The second interview begins with Arnold Beckman describing the National Technical Laboratories in the late 1930s. He details NTL policies and operations. The majority of the transcript focuses on the change from NTL to…

    • 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…

    • Remarks by Edwin P. Arthur before the Los Angeles Section of the American Ceramic Society March 9, 1955
    • 1955-Mar-09

    In his address to the American Ceramic Society, Edwin Arthur discussed the importance of pH--and, by extension, the measurement of pH with Beckman instruments--in the work of ceramists.

    Arnold Beckman invented his…

    • 1969

    The three pH buffer solutions were color-coded Red (pH 4), Green (pH 7), and Blue (pH 10).

    • Undated

    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…

    • Undated

    Undated notes by an unknown author, although his person was very likely a Beckman Instruments employee.

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