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Title: Colorimeters
Author: Jensen, William B.
Description: The classical colorimeter is an instrument for measuring the intensity of a color, usually by visually matching it with a standard of some sort.1 Though there are colorimeters (sometimes called tintometers) designed to measure and standardize the colors of everything from light sources to paints, dyes and oils, for the average chemist the term usually refers to an instrument used to determine the concentration of a colored species in solution by matching its color intensity with that of a solution of known concentration for the same species. The chemical colorimeters in the Oesper Museum are based upon a collection of such instruments donated by the late Melvin G. Mellon of Purdue University (figure 1) in the early 1990s and, though additional instruments from other sources have since been added, in recognition of his generosity the collection as a whole has been named in his honor.
Bookmark: http://hdl.handle.net/2374.UC/734054
Date: 2014-11-25

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