Beckman pH meter in a glass case
- 1980s
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PDFFull-sized JPG1110 x 1357px — 133 KBOriginal fileTIFF — 1110 x 1357px — 4.4 MBA Polaroid photograph of what seems to be a Model G pH meter in a clear glass case as part of an exhibit or display.
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 PH Meter in a Glass Case,” 1980–1989. Beckman Historical Collection, Box 55, Folder 57. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/b5644r534.
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