Köhler Immersion Colorimeter

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Description
Fritz Köhler, an instrument maker in Leipzig, showed an instrument of this sort at the World’s Fair held in St. Louis in 1904, describing it as a “Tauch-Kolorimeter mit Lummer-Brodhunschem Würfel” (that is, a Dipping Colorimeter with a Lummer-Brodhun cube). This cube was designed in 1889 by Otto Lummer and Eugen Brodhun, both of the Physikalisch-Technische Reichsanstalt in Berlin. It enabled a user to look horizontally through the sample and vertically through the standard at the same time. Köhler was still in business in 1922.
This example is marked “Fritz Köhler, Universitats Mechaniker, Leipzig.” The Department of Chemistry of the University of Pennsylvania donated it to the Smithsonian in 1958.
Ref: Fritz Köhler, Colorimeter (Leipzig, 1897).
Location
Currently not on view
maker
Fritz Kohler
place made
Deutschland: Sachsen, Leipzig
Physical Description
iron (overall material)
Measurements
overall: 11 3/4 in x 5 in x 3 1/2 in; 29.845 cm x 12.7 cm x 8.89 cm
overall: 11 3/4 in x 5 1/2 in x 6 in; 29.845 cm x 13.97 cm x 15.24 cm
ID Number
CH.316228
catalog number
316228
accession number
217523
Credit Line
University of Pennsylvania
subject
Color
Optics
Chemistry
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Data Source
National Museum of American History, Kenneth E. Behring Center

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