Gallenkamp Colorimeter
name: label: maker
content: Hans Heele
notes: label: Description
content: A wedge colorimeter contains two hollow wedges, one holding the sample and one holding the standard. By moving the wedges up and down, one can vary the depth of solution through which light passes. W. Gallenkamp obtained a German patent (#62560) for the basic form in 1891, and Hans Heele in Berlin made several instruments of this sort. Richards & Co. in New York offered a “Gallenkamp-Heele’s Colorimeter” in 1896, noting that it had a “direct scale of percentage” that permitted very accurate readings, was “especially adapted for sugar factories, dyeing establishments, etc.,” and cost $85.
label: Description
content: The Department of Chemistry at Yale University donated this example to the Smithsonian in 1960. The “D.R.G.M. Hans Heele, Berlin” inscription indicates that it was made before 1923 when Heele’s firm was bought by Bamberg.
label: Description
content: Ref: Hans Heele, <i>Heele-Gallenkamp Kolorimeter</i> (Berlin, n.d.).
label: Location
content: Currently not on view
place: label: place made
content: Germany: Berlin, Berlin
topic: label: Subject
content: Optics
label: Subject
content: Color
label: Subject
content: Chemistry
setName: label: See more items in
content: Medicine and Science: Chemistry
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content: Saccharimeters
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content: Measuring & Mapping
creditLine: label: Credit Line
content: Yale University Department of Chemistry
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: CH.317270
label: catalog number
content: 317270
label: accession number
content: 229279
objectType: label: Object Name
content: Colorimeter
physicalDescription: label: Measurements
content: overall: 18 in; 45.72 cm
label: Measurements
content: overall: 10 7/8 in x 8 in x 7 in; 27.6225 cm x 20.32 cm x 17.78 cm