Florence flask

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Florence flask
Photograph of a 1 liter Florence flask suspended by its neck with a three-finger clamp
Related itemsRound-bottom flask

A Florence flask/boiling flask is a type of flask used as an item of laboratory glassware and is named after the city Florence.[1] It is used as a container to hold liquids. A Florence flask has a round body, a long neck, and often a flat bottom. It is designed for uniform heating, boiling, distillation and ease of swirling; it is produced in a number of different glass thicknesses to stand different types of use. They are often made of borosilicate glass for heat and chemical resistance. Traditional Florence flasks typically do not have a ground glass joint on their rather longer necks, but typically have a slight lip or flange around the tip of the neck. The common volume for a Florence flask is 1 litre.[2]


  1. ^ "Definition of FLORENCE FLASK". Merriam-webster.com. Retrieved 14 December 2021.
  2. ^ Thompson, Robert (2008). Illustrated guide to home chemistry experiments: all lab, no lecture. Sebastopol, Calif.: O'Reilly Media, Inc. p. 17. ISBN 978-0-596-51492-1.