Bunsen Burner
Bunsen Burner - Related Videos
07:04
Introduction to the Bunsen Burner
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2023
The Bunsen burner, named after and co-designed by Robert Bunsen in 1854, is a common laboratory instrument that produces a hot, sootless, non-luminous flame. The Bunsen Burner allows for precise regulation of the mixing of gas and oxygen in its central barrel before combustion, which ignites the flame. By manipulating the Bunsen burner, both the size and temperature of the flame can be controlled. Among other uses, the heat of a Bunsen burner flame can be used to create a convection current,...
03:42
Continuous In-woods Production of Biochar Using a Trailer-Mounted Air Curtain Burner
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Cited by 4 •
2024
We describe the use of a place-based mobile pyrolysis unit equipped with an air curtain to continuously create biochar. The technology reduces the need for open slash pile burning, which results in lower emissions and fewer soil impacts. The protocol includes guidelines for site selection, loading, and quenching.
12:47
Ideal Gas Law - Student Protocol
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2020
Source: Smaa Koraym at Johns Hopkins University, MD, USA Determining the Mass of the Unknown LiquidExpand According to the ideal gas law for a given pressure, temperature, and volume, the number of moles of gas in that volume is always the same. In this lab, you will use that relationship to calculate the molar mass of an unknown liquid. You will immerse a Dumas tube containing the unknown liquid in boiling water to vaporize the solvent. After waiting a few minutes for the vapor to...
10:13
Working with Hot and Cold Sources
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2023
Source: Robert M. Rioux & Suprita Jharimune, Pennsylvania State University, University Park, PA Working with extreme temperatures, both high and low, is an integral part of many laboratory operations. For many, mentioning a laboratory instantly evokes the mental picture of a Bunsen burner. Bunsen burners and hot plates are used extensively in small and large operations in research laboratories and industries, thus making it necessary for all users to be aware of their safe handling...
07:27
Metal Flame Emission - Student Protocol
0 Views •
2020
Source: Smaa Koraym at Johns Hopkins University, MD, USA Metal Flame Emission TestingExpand In this lab, you will excite the electrons of six metal chloride salts with heat from a flame and measure the wavelength of light emitted by the relaxing electrons. The emitted light is in the visible spectrum, so you will see different colored flames for the different metals. At the end of the lab, you will measure the emission spectrum of a sparkler and use the data you collected from the metal...
FAQs
The adjustable air openings control how much air mixes with the gaseous fuel before combustion. Changing this air supply alters the flame’s color, temperature, and completeness of combustion. This adjustment lets a user select a flame suitable for different laboratory tasks, including heating materials or providing conditions for sterilizing biological equipment.
Combustion completeness affects the flame characteristics produced by the burner. The fuel-air mixture determines whether the flame provides the intended temperature and appearance, so incorrect adjustment can reduce control during heating or sterilization. In biology laboratories, consistent flame conditions support more reproducible handling of cultures, media, and equipment.
Fuel and air mixing is the central control point in a Bunsen burner. Gaseous fuel enters the burner and combines with air through adjustable openings before burning, allowing the flame to be modified rather than remaining fixed. This controllability helps match the flame to the required laboratory operation and supports careful experimental handling.
During microbial culture procedures, the flame is used to sterilize inoculating loops, tube openings, and other equipment. These items are exposed to the burner as part of laboratory handling intended to limit contamination. Maintaining appropriate flame adjustment and safe handling supports aseptic conditions, helping cultures remain suitable for observation and further experimentation.
A Bunsen burner can heat solutions and culture media in addition to supporting equipment sterilization. Its controllable flame provides a direct laboratory heat source when biological preparations require warming. Using the burner for these tasks connects flame adjustment with the needs of the material being handled, while careful operation helps preserve reliable experimental conditions.
Its importance in biology comes from combining controlled heating with support for aseptic handling. Sterilizing inoculating loops and tube openings, while also heating solutions or media, helps reduce opportunities for contamination during microbial work. Proper flame adjustment and safe handling therefore contribute to dependable cultures and more reliable experimental results.