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1 gen 1936 anni - The Beckman pH meter is released

Descrizione:

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

Aggiunto al nastro di tempo:

CH 345 Timeline

ByGenetta
30 apr 2018
1
0
1304

Data:

1 gen 1936 anni
Adesso
~ 89 years ago

Immagini:

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