Fehling's solution

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Related to Fehling's test: Seliwanoff's test

Feh·ling's solution

An aqueous solution of copper sulfate, sodium hydroxide, and potassium sodium tartrate used to test for the presence of sugars and aldehydes in a substance, such as urine.

[After Hermann von Fehling (1812-1885), German chemist.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Fehling's solution - a liquid solution of copper sulfate and potassium tartrate and sodium hydroxide that is used to test for sugar in the urine; solution turns reddish when sugar is present
solution - a homogeneous mixture of two or more substances; frequently (but not necessarily) a liquid solution; "he used a solution of peroxide and water"
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References in periodicals archive ?
Fehling's test: The test samples were hydrolyzed with hydrochloric acid and treated with a base (neutralized).
Reducing sugars: Reducing sugars and apparent sucrose were determined by potentiometric titration using the Fehling's test (Lane and Eyon modified method).
Phytochemical analyzed Test method Inference Carbohydrate Molisch's test - Fehling's test - Flavonoids Alkaline reagent test + Ferric chloride test ++ Tannins Ferric chloride test ++ Potassium dichromate test +++ Glycosides Keller-Kiliani's test + Saponins Foam test +++ Alkaloids Mayer's test + Dragendorff's test + Sterols and triterpenoids Salkowski test - Amino acids Ninhydrin test - (+++): appreciable amount; (++) moderate amount; (+) trace amount; (-) completely absent.