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Analytical chemistry
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Analytical chemistry
Hartmann diaphragm
Chemistry; Analytical chemistry
Comparison device for positive-element-identification readings from emission spectra.
Hartman’s solution
Chemistry; Analytical chemistry
Solution of thymol, ethyl alcohol, and sulfuric ether; used for selective dentin analysis.
Hehner number
Chemistry; Analytical chemistry
Weight percent of water-insoluble fatty acids in fats and oils.
Hercules trap
Chemistry; Analytical chemistry
Water-measuring liquid trap used in aquametry when the material collected is heavier than water.
Hinsberg test
Chemistry; Analytical chemistry
A test to distinguish between primary and secondary amines; it involves reaction of an amine with benzene disulforyl chloride in alkaline solution; primary amines give sulfonamides that are soluble ...
Hopkins-Cole reaction
Chemistry; Analytical chemistry
The appearance of a violet ring when concentrated sulfuric acid is added to a mixture that includes a protein and glyoxylic acid; however, gelatin and zein do not show the reaction.
Hortvet sublimator
Chemistry; Analytical chemistry
Device for the determination of the condensation temperature (sublimation point) of sublimed solids.