:Heated bath

{{About|a laboratory equipment||Water bath (disambiguation){{!}}Water bath}}

{{More sources needed|date=May 2017}}

File:Laznia laboratoryjna.svg. 4: Bowl. 5: Gas burner]]

A heated bath is used in the laboratory to allow a chemical reaction to occur at an elevated temperature.{{Cite book |title=Vogel's textbook of practical organic chemistry |date=2009 |publisher=Pearson/Prentice Hall |isbn=978-0-582-46236-6 |editor-last=Furniss |editor-first=Brian S. |edition=New. ed., 5. ed., rev. [Nachdr.] |location=Harlow |editor-last2=Vogel |editor-first2=Arthur Israel}}

In contrast to traditional Bunsen burners, heated baths use liquids to transfer heat to the reaction vessel. This is achieved using a high-boiling point liquid inside a thermally conducting bath (usually made of metal). Water and silicone oil are the most commonly used fluids. A water bath is used for temperatures up to 100 °C. An oil bath is employed for temperatures over up to and above 100 °C.

The heated bath is heated on an electric hot plate, or with a Bunsen burner. The reaction vessel (Florence flask, Erlenmeyer flask, or beaker) is immersed in the heated bath. A thermometer is usually kept in the fluid to monitor the temperature.