Color Comparator
notes: label: Description
content: Color comparator for determining hydrogen ion concentrations, devised by Leslie H. Cooledge (1888-1925) of the Department of Bacteriology and Hygiene at the Michigan State Agricultural College; and manufactured by Central Scientific Co.
label: Description
content: Ref: L. H. Cooledge, “Cooling Milk at the Farm,” Orange Judd Farmer (March 20, 1920): 23.
label: Description
content: Central Scientific Co. ad for “The Cooledge Comparator” in Soil Science 8 (Jan. 1922): 4.
label: Description
content: “Obituary: Professor Leslie H. Cooledge,” The Quarterly Bulletin, Agricultural Experiment Station, Michigan Agricultural College (Feb. 1926): 151-152.
label: Location
content: Currently not on view
setName: label: See more items in
content: Medicine and Science: Biological Sciences
creditLine: label: Credit Line
content: University of Wisconsin, College of Agricultural and Life Sciences, Department of Bacteriology
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1995.0191.07
label: accession number
content: 1995.0191
label: catalog number
content: 1995.0191.07
objectType: label: Object Name
content: Color Comparator
physicalDescription: label: Physical Description
content: metal, nonferrous (overall material)
label: Physical Description
content: wood (overall material)
label: Measurements
content: overall: 60.9 cm x 18.1 cm x 12.1 cm; 24 in x 7 1/8 in x 4 3/4 in