Object Record
Images
Metadata
Title |
Coleman Model 3D pH Meter |
Object Name |
Tester, Acidity |
Object ID |
2002.003.160 |
Description |
Self contained pH meter with wooden exterior; hinged top door opens to reveal meter face and inlaid paper instructions for use; the double scale reads pH and millivolts; hinged door on left side of wooden case opens to reveal electrode compartment. Serial Number (Bodensee Database): 1827 Notes from Bodensee Database: Date of the operating manual: 27.09.1943. First input impedance pH-Meter. A Second device with [Bodensee] #139 exists. This is 2002.003.159 |
Date |
1938 |
Made |
Coleman Electric Co. |
Collection |
Bodensee Collection |
Digital Collections Link |
https://digital.sciencehistory.org/works/n870zq908 |
Search Terms |
Acids Bases (Chemistry) Hydrogen-ion concentration--Measurement Laboratories--Equipment and Supplies Measuring Instruments |
Provenance |
Gift of the Bodenseewerk Perkin-Elmer Museum of Instrumental Analysis, Überlingen, Germany. CHF received the Museum's collection in December of 2001. Formal transfer of custody occurred in June of 2002. Obtained by the Bodenseewerk Museum from Coleman Perkin-Elmer, 1978. |