Modifications
The volumetric flasks are generally colourless but may be amber-colored for handling light-sensitive compounds such as silver nitrate or vitamin A.
A modification of the volumetric flask exists for dealing with large quantities of solids that are to be transferred into and dissolved in a volumetric vessel. Such flask has an wide mouth and known as Kohlrausch volumetric flask. This kind of volumetric flask found particular application in the procedure for the sugar content analysis in sugar beet.
While conventional volumetric flasks have a single mark, volumetric tests in the analytical and food chemistry may employ specialized two-mark volumetric flasks used to combine two accurately measured volumes.
A highly specialized kind of the volumetric flask is Le Chatelier flask for use with the volumetric procedure in the specific gravity determination.
Read more about this topic: Volumetric Flask