Thin layer gel chromatography of dextrans

Microgram quantities of soluble dextran fractions have been separated by thin layer gel chromatography. The dextrans are first combined with a triazine dye to render them visible during the chromatography and to facilitate the densitometric evaluation of the chromatograms. The method allows the determination of dextran molecular weights up to approximately 100 000 and can also be used in studying the polydispersity of the fractions.