Instructions for Beckman Model G pH meter
- 1949
Owners of the Model G would have found these instructions tucked inside the lid of the wooden case surrounding the instrument.
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 “acidimeter” with its glass electrode was renamed the Model G pH meter in 1937 and produced on a larger scale by Beckman’s company, National Technical Laboratories. This instrument kicked off the rapid development not only of NTL and Beckman Instruments, but also of the electronic scientific instrument industry.
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Cite as
Beckman Instruments, Inc. “Instructions for Beckman Model G PH Meter,” 1949. Beckman Historical Collection, Box 104, Folder 37. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/hm50ts226.
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