Bunsen Burner, 800 TO 1200-BTU/CF, Natural Gas
The Bunsen standard lab burner features a 0.50-inch (12.7mm) aluminum mixing tube with a flame stabilizer, a circular base with a hole, and a 5/16-inch (7.9mm) OD serrated gas inlet connection. With a height of 6.125 inches (156mm), Bunsen burners serve as essential tools in the lab, providing a reliable heat source for various experiments. They come equipped with an inlet for gas and an air flow hole, allowing for flame adjustments that enhance safety and efficiency during chemical procedures. Bunsen burners can reach a maximum temperature of up to 1560 ºC.
Laboratory Burners with nickel-plated zinc alloy base are available for different lab applications and use 800 to 1,200btu/cf natural gas.
Features:
- Three models to fit your needs
- Gas
- Air Supply
- Ni-plated zinc bases
- Adjustable flame which is the hottest part
Design
A Bunsen burner is built for a German chemist for precision and efficiency in a new laboratory settings. It consists of a metal tube mounted on a base, featuring an inlet for gas at the bottom. This gas inlet typically includes an adjustable valve for precise control.
The sides of the metal tube have adjustable holes, controlled by a collar, to admit the desired amount of air. This allows for a controlled mixture of air and gas which is then forced to the top of the tube by gas pressure. The Bunsen burner is connected to a gas source via a hose barb and rubber tubing so it’s secure and flexible.
The Bunsen burner is designed for precise control of both air and gas flow, allowing you to adjust the flame according to your laboratory requirements. This control is essential for achieving the correct type and temperature of the flame.
Operating Principles and Safety Features
The Bunsen burner operates by combining a flammable gas (like gas) with controlled amounts of air before ignition. This starts at the air hole at the bottom of the chimney where air and gas mix. The Venturi effect (where there is a pressure difference that draws air into the air hole) helps with the mixing.
As the gas flows through the chimney the flame goes from an unstable orange flame to a blue flame and the blue flame is hotter. The unstable orange flame, which appears when the air hole is fully closed, has a lower temperature. This is known as the safety flame (or yellow flame) and is used for lighting; it is the default setting when the burner is in use.
The blue flame is the hottest flame and gives you the highest temp from the burner. This is needed for many chemical reactions. Variations of the original Bunsen burner like the Meker burner and Fisher burner have metal grids to increase turbulence and keep the flame at the top of the tube. The Fisher burner has forced air so you don’t need a secondary flame dependent on ambient air.
Safety is a primary focus in designing the Bunsen burner. Adjustable air and gas flow features help prevent flashback, ensuring safe usage. Together with its versatility and precision, these safety elements make it a must-have tool.