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Description:
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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. |
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 United States