Gallenkamp Colorimeter

A wedge colorimeter contains two hollow wedges, one holding the sample and the other 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.
This example is marked “D.R.-G.-M. Hans Heele, Berlin.” It was made before 1923 when Heele’s firm was bought by Bamberg. The Department of Chemistry at Yale University donated it to the Smithsonian in 1960.
Ref: Hans Heele, Heele-Gallenkamp Kolorimeter (Berlin, n.d.).
Currently not on view
Object Name
Hans Heele
overall: 18 in; 45.72 cm
place made
Deutschland: Berlin, Berlin
ID Number
catalog number
accession number
See more items in
Medicine and Science: Chemistry
Measuring & Mapping
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Yale University Department of Chemistry

Visitor Comments

Add a comment about this object

**Please read before submitting the form**

Have a comment or question about this object to share with the community? Please use the form below. Selected comments will appear on this page and may receive a museum response (but we can't promise). Please note that we generally cannot answer questions about the history, rarity, or value of your personal artifacts.

Have a question about anything else, or would you prefer a personal response? Please visit our FAQ or contact page.

Personal information will not be shared or result in unsolicited e-mail. See our privacy policy.

Enter the characters shown in the image.