Definition of Fehling's solution

1. Noun. 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.

Generic synonyms: Solution



Definition of Fehling's solution

1. Noun. (chemistry) an alkaline solution of copper sulphate which changes from blue to red in the presence of an aldehyde or a reducing sugar ¹

¹ Source: wiktionary.com

Medical Definition of Fehling's solution

1. An alkaline copper tartrate solution formerly used for detection of reducing sugars. Synonym: Fehling's reagent. (05 Mar 2000)

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Literary usage of Fehling's solution

Below you will find example usage of this term as found in modern and/or classical literature:

1. An Introduction to the Chemistry of Plant Products by Paul Haas, Thomas George Hill (1913)
"L ESTIMATION BY MEANS OF FEHLING-S SOLUTION. The principle of this method lies in the fact that certain sugars are capable of reducing copper sulphate in ..."

2. A Systematic Handbook of Volumetric Analysis: Or, The Quantitative by Francis Sutton (1901)
"100 cc Pavy-s solution = 10 cc Fehling-s solution = 0-05 gm. of glucose. As ammoniacal cuprous solutions are readily oxidized, it is important ..."

3. Engineering Chemistry: A Manual of Quantitative Chemical Analysis by Thomas Bliss Stillman (1897)
"Sadtler states as follows regarding this test: " In carrying out the gravimetric method the Fehling,s solution remains in excess (indicated by the blue ..."

4. Food Adulteration and Its Detection by Jesse Park Battershall (1887)
"Glucose and invert sugar are usually quantitatively determined by means of Fehling-s solution. As this preparation is liable to decompose upon keeping, ..."

5. Chemical and microscopical diagnosis: By Francis Carter Wood by Francis Carter Wood (1905)
"The reduction of the Fehling-s solution is much more accurate when the sugar solution is added as rapidly as possible, so that the first titration must be ..."

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