Bunsen burner
A Bunsen burner, named after Robert Bunsen, is a kind of ambient air gas burner used as laboratory equipment; it produces a single open gas flame, and is used for heating, sterilization, and combustion. The gas can be natural gas, which is mainly methane, or a liquefied petroleum gas, such as propane, butane, a mixture or, as Bunsen himself used, coal gas.