Analytical chemistry

Analytical chemistry

Industry: Chemistry

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Analytical chemistry

Barfoed’s test

Chemistry; Analytical chemistry

A test for monosaccharides conducted in an acid solution; cupric acetate is reduced to cuprous oxide, a red precipitate.

Benedict’s solution

Chemistry; Analytical chemistry

A solution of potassium and sodium tartrates, copper sulfate, and sodium carbonate; used to detect reducing sugars.

Pavy’s solution

Chemistry; Analytical chemistry

Laboratory reagent used to determine the concentration of sugars in solution by color titration; contains copper sulfate, sodium potassium tartrate, sodium hydroxide, and ammonia in water solution.

pH electrode

Chemistry; Analytical chemistry

Membrane-type glass electrode used as the hydrogen-ion sensor of most pH meters; the pH-response electrode surface is a thin membrane made of a special glass.

pH measurement

Chemistry; Analytical chemistry

Determination of the hydrogen-ion concentration in an ionized solution by means of an indicator solution (such as phenolphthalein) or a pH meter.

Five standard laboratory solutions available from the U. S. National Institute of Standards and Technology, each solution having a known pH value; the standards cover pH ranges from 3.557 to 8.833. ...

POD analysis

Chemistry; Analytical chemistry

A precision laboratory distillation procedure used to separate low-boiling hydrocarbon fractions quantitatively for analytical purposes. Also known as Podbielniak analysis.