<Tr> <Th> Related items </Th> <Td> Hot plate Heating mantle Meker - Fisher burner Teclu burner </Td> </Tr> <P> A Bunsen burner, named after Robert Bunsen, is a common piece of laboratory equipment that produces a single open gas flame, which is used for heating, sterilization, and combustion . </P> <P> The gas can be natural gas (which is mainly methane) or a liquefied petroleum gas, such as propane, butane, or a mixture of both . </P> <P> In 1852 the University of Heidelberg hired Bunsen and promised him a new laboratory building . The city of Heidelberg had begun to install coal - gas street lighting, and so the university laid gas lines to the new laboratory . </P>

Give the name of a substance that is used as a fuel in the bunsen burner