Du·boscq col·or·im·e·ter

(dū-bosk'),

an early apparatus for measuring the depth of tint in a fluid by comparing it with a standard fluid; glass cylinders are immersed in each of two cups, one containing standard fluid and the other the fluid to be tested; on looking through the cylinders, the tints are equalized by raising or lowering the cylinder in one cup; the extent of this raising or lowering is indicated on a scale and gives the exact difference in tint.

[Jules Duboscq]

Farlex Partner Medical Dictionary © Farlex 2012

Duboscq,

Jules, French optician, 1817-1886.

Duboscq colorimeter - an apparatus for measuring the depth of tint in a fluid.

Medical Eponyms © Farlex 2012

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References in periodicals archive

Of course, the contributions and impact of Donald Dexter Van Slyke, Stanley Benedict, and Otto Folin are prominently featured, as is the introduction of analysis by color comparison and the Duboscq colorimeter, invented by Jules Duboscq in 1870.

A guide to the history of clinical chemistry

Chemistry procedures were performed by color comparison with a standard on a Duboscq colorimeter until the Klett-Summerson colorimeter brought electronics into the arena.

Safe BUNs and other changes: we've come a long way in three decades

In less than 90 years, the chemistry laboratory moved from the Duboscq colorimeter (circa 1919) to the most advanced of automated analytical instruments, virtually eliminating all manual procedures while simultaneously expanding the number of diagnostic tests.

Landmark Papers in Clinical Chemistry

The Duboscq colorimeter became a predominant instrument for comparing the colors of unknowns with those of standard solutions; matching of colors depended on the technologist's color perception.

The AACC celebrates its 50th anniversary: excerpt from an article in the history division newsletter-prepared by Nathan Radin with input from Samuel Meites, Louis Rosenfeld, Wendell T. Caraway, and J. Stanton King

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