pH Meter
pH Meter
Previous
Next
Usage conditions apply
- Description
- A pH meter measures the acidity of aqueous solutions. When asked about an instrument suitable for testing citrus fruit, Arnold Beckman, a young chemist at the California Institute of Technology, designed pH meter with glass electrodes, and showed a prototype at the American Chemical Society meeting in 1935. This example dates from the 1960s. One inscription reads “CORNING / SCIENTIFIC INSTRUMENTS” and “pH METER / MODEL 10.” Another reads “Catalog No. / 475010 / Serial No. 125004.”
- Ref: Ad in Analytical Chemistry 39 (March 1967): 101A.
- Location
- Currently not on view
- Object Name
- pH meter
- pH Meter
- maker
- Corning Scientific Instruments
- Associated Place
- United States: New York, New York City
- United States: New Jersey
- Physical Description
- metal (overall material)
- glass (overall material)
- Measurements
- overall: 38.1 cm x 15.2 cm x 22.9 cm; 15 in x 6 in x 9 in
- overall: 9 in x 15 in x 6 1/2 in; 22.86 cm x 38.1 cm x 16.51 cm
- ID Number
- 1991.0892.05
- catalog number
- 1991.0892.05
- accession number
- 1991.0892
- Credit Line
- Gift of Worcester Foundation for Experimental Biology, Inc. (through Thoru Pederson)
- See more items in
- Medicine and Science: Chemistry
- Data Source
- National Museum of American History
Nominate this object for photography.
Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.
If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.
