Beckman Model 18 Phistol pH Meter
- Circa 1975
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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Related Items
Cite as
“Beckman Model 18 Phistol PH Meter,” circa 1975. Beckman Historical Collection, Box 83. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/2n49t195x.
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