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Congratulations to the winners in the Beckman oldest pH meter contest
- 1971
Congratulations to CalTech, who in 1971 had the oldest Beckman Instruments pH meter still in operating condition according to this advertisement. The Model F was introduced in 1936 and the Model G in 1937, back when Beckman Instruments, Inc. was still National Technical Laboratories (NTL).
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
N.W. Ayer & Son, and Inc. Beckman Instruments. “Congratulations to the Winners in the Beckman Oldest PH Meter Contest,” 1971. Beckman Historical Collection, Box 18, Folder 27. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/vh53wv72q.
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