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Creator Beckman, Arnold O. Remove constraint Creator: Beckman, Arnold O. 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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    • 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…

    • Beckman Reprint R-38
    • 1950-Jun

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