Archives Catalog Entry
PH meter, model G
Serial number #15172. Glass electrode pH meter. National Technical Laboratories, So. Pasadena, CA. CIT Chem. ID #5391, with tag: "meter, pH direct reading". Complete with electrodes. In wood case-showing wear. Gift of Thomas Dunn, Chem. Division, electrical shop.
Manufacturer: National Technical Laboratories, 1940s.
Beckman, Arnold Orville (Chemist, Inventor, Philanthropist)
Jan. 1, 1940
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