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Genre Manuscripts Remove constraint Genre: Manuscripts Format Image Remove constraint Format: Image Subject Beckman Instruments, inc. Remove constraint Subject: Beckman Instruments, inc.

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    • 1956

    Although the author is unknown, these instructions were most likely written by a Beckman Instruments employee. This glass electrode was used in Beckman pH meters.

    Arnold Beckman invented his first pH meter in 1934 at…

    • 1954-Sep-26

    These handwritten notes on glass electrodes appear to be signed Noel B. Brayman.

    Glass electrodes were used in Beckman pH meters and various other instruments.

    • 1946-Apr-08

    Handwritten and -drawn notes detail the resistors used in the Model F 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…

    • 1954-Mar-28

    This series of handwritten and -drawn notes relates to the development of the Beckman DU-X2 spectrophotometer. One of the pages appears to be missing.

    The first Beckman Instruments DU Spectrophotometer was developed in…