Bunsen burner

Bunsen burner


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Bunsen burner. Lit bunsen burner burning with a blue flame. The colour of the flame indicates how much oxygen is being mixed with the fuel. A blue flame indicates a high oxygen content, while a low oxygen content would result in a yellow flame. The fuel (natural gas) is supplied through the rubber tubing at left. The flow of oxygen is controlled by the valve at the base of the bunsen burner. The valve is ring-shaped and contains holes through which a varying supply of air is provided. Bunsen burners are used in laboratories to heat chemical reactions and to carry out flame tests. The bunsen burner is named after the German chemist Robert Bunsen (1811-1899), who popularised its use.

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