The Laboratory Gas Burner Tirrill or Bunsen burners provide a ready source of heat in the chemistry laboratory. In general, since chemical reactions proceed faster at elevated temperatures, the use of heat enables the experimenter to accomplish many experiments more quickly than would be possible at room temperature. The burner illustrated in Fig. is typical of the burners used in most general chemistry laboratories. Figure The Bunsen burner. Hottest part of the flame (800°C) Violet outer cone Pale-blue middle cone Dark-blue inner cone .
