1 Jan 1936 Jahr - The Beckman pH meter is released

Beschreibung:

The meter was produced in order to find a better way to measure the pH of solutions. Beckman fit all of the needed instrumentation in a nice small box.
https://www.acs.org/content/acs/en/education/whatischemistry/landmarks/beckman.html

Zugefügt zum Band der Zeit:

30 Apr 2018

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CH 345 Timeline

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