Financial statement for glass electrode
- 1934-Jun-19
A bill sent by Arnold Beckman to W. E. Baier, covering the cost of a "glass-electrode apparatus," which was included in the first Beckman 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 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. “Financial Statement for Glass Electrode,” June 19, 1934. Beckman Historical Collection, Box 14, Folder 8. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/wm117p07n.
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