Ethanol, 1 l, glass

Molisch’s test:

Molisch’s reagent is added to a diluted sample of monosaccharide and concentrated sulphuric acid is added down the sides of the test tube to form a layer beneath the solution. A purple ring forms at the interface between the layers. Since nucleic acids and glycoproteins also contain monosaccharides, they may react as well.

Selivanov’s test:

Selivanov’s test involves acidifying a sugar solution with concentrated hydrochloric acid, adding an ethanolic resorcinol solution and heating. Ketoses react quickly to form a red-coloured dye, while aldoses do not react at all, or only react slowly.

Carl ROTH offers an extensive range of calibration and control standards. These products are manufactured from highly pure starting material and are specially tested for each application. The corresponding batch-specific certificate of analysis is available online. Each product series offers excellent value for money.