pH Meter
name: label: maker
content: Corning Scientific Instruments
notes: label: Description
content: 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 a 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.”
label: Description
content: Ref: Ad in <i>Analytical Chemistry</i> 39 (March 1967): 101A.
label: Location
content: Currently not on view
place: label: Associated Place
content: United States: New York, New York City
setName: label: See more items in
content: Medicine and Science: Chemistry
creditLine: label: Credit Line
content: Gift of Worcester Foundation for Experimental Biology, Inc. (through Thoru Pederson)
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1991.0892.05
label: catalog number
content: 1991.0892.05
label: accession number
content: 1991.0892
objectType: label: Object Name
content: pH meter
label: Object Name
content: pH Meter
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: glass (overall material)
label: Measurements
content: overall: 38.1 cm x 15.2 cm x 22.9 cm; 15 in x 6 in x 9 in
label: Measurements
content: overall: 9 in x 15 in x 6 1/2 in; 22.86 cm x 38.1 cm x 16.51 cm