Instructions for Operating the Beckman Model H pH Meter
Bulletin 168-B
- 1950-Oct

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Small JPG1200 x 1529px — 398 KBFull-sized JPG2725 x 3473px — 1.6 MBOriginal fileTIFF — 2725 x 3473px — 27.1 MBArnold 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 rapid development not only of Beckman Instruments, Inc. but also of the electronic scientific instrument industry.
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Cite as
Beckman Instruments, Inc. “Instructions for Operating the Beckman Model H PH Meter,” October 1950. Beckman Historical Collection, Box 19, Folder 20. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/6d56zx16p.
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