Beckman pH Meter - Pasadena, CA - Signs of History on Waymarking.com

The plaque says, "Arnold O. Beckman developed the first commercially successful electronic pH meter while a member of the faculty of the California Institute of Technology. This rugged and portable “acidimeter,” which had all necessary components housed in a single unit, allowed scientists to measure acidity accurately and rapidly. It immediately met an important need of the California citrus industry: how to measure the pH of lemon juice. The innovative features of the pH meter, including an early use of integrated electronic technology, were the basis for subsequent modern instrumentation developed by Beckman and Beckman Instruments."

Group that erected the marker: American Chemical Society Address of where the marker is located. Approximate if necessary: Pasadena, CA, USA URL of a web site with more information about the history mentioned on the sign: Not listed

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Date Logged Log   02/19/2021 bluesnote visited it