Archives Catalog Entry
PH meter, model M
Industrial model. Serial # not shown. CIT Div. of Chemistry inventory label #2260. Manufacturer: National Technical Laboratories. Very similar to ST-BE-03, but lacks lid and side door as well as hinges and latch. Wood case has been stripped.
Beckman, Arnold Orville (Chemist, Inventor, Philanthropist)
Jan. 1, 1936
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