An Erlenmeyer flask, also known as a conical flask (British English)[1] or a titration flask, is a type of laboratory flask with a flat bottom, a conical body, and a cylindrical neck. It is named after the German chemist Emil Erlenmeyer (1825–1909), who invented it in 1860.[2]
Erlenmeyer flasks have wide bases and narrow necks.[3] They may be graduated, and often spots of ground glass or enamel are used where they can be labeled with a pencil. It differs from the beaker in its tapered body and narrow neck.[4] Depending on the application, they may be constructed from glass or plastic,[5] in a wide range of volumes.[6]
The mouth of the Erlenmeyer flask may have a beaded lip that can be stoppered or covered. Alternatively, the neck may be fitted with ground glass or other connector for use with more specialized stoppers or attachment to other apparatus. A Büchner flask is a common design modification for filtration under vacuum.
- ^ Andrea Sella (July 2008). "Classic Kit: Erlenmeyer flask". Royal Society of Chemistry..
- ^ Emil Erlenmeyer, "Zur chemischen und pharmazeutischen Technik," Zeitschrift für Chemie und Pharmacie, vol. 3 (January 1860), 21-22. He wrote that he first displayed the new flask at a pharmaceutical conference in Heidelberg in 1857, and that he had arranged for its commercial production and sale by local glassware manufacturers.
- ^ "Definition of Erlenmeyer flask | Dictionary.com". www.dictionary.com. Retrieved 2023-03-16.
- ^ Laboratory Glassware. 17 November 2011
- ^ Laboratory Flasks Information. 15 July 2016
- ^ Volumetric Glassware. 15 July 2016