what is a bunsen burner

A Bunsen burner is a type of gas burner commonly used as a heat source in laboratory experiments. It consists of a flat base with a straight tube extending vertically, known as the barrel or chimney. Natural gas or a liquefied petroleum gas such as propane or butane is supplied at the bottom of the chimney, and the other critical component of a Bunsen burner is the air hole, which allows pre-mixing of air and gas before combustion occurs at the top of the chimney. A collar around the base of the chimney, with a hole that aligns with the air hole, acts as an air regulator, allowing the air in the pre-mixture to be adjusted. The hottest part of the Bunsen flame, which is found just above the tip of the primary flame, reaches about 1,500 °C (2,700 °F). The Bunsen burner was named after Robert Bunsen, the German chemist who introduced it in 1855.