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Fume Hood and it's basics



What is a fume hood?

A fume hood is a ventilated enclosure that is used to contain hazardous fumes, vapors, and gases. It is an essential piece of safety equipment in laboratories where hazardous chemicals are used. Fume hoods work by drawing air from the work area into the hood, where it is filtered and then exhausted to the outside. This helps to prevent the spread of hazardous materials into the laboratory environment.


Fume Hood 

Hood Dial 



Uses of fume hoods

Fume hoods are used in a variety of laboratories, including chemistry, biology, and physics labs. They are also used in industrial settings where hazardous chemicals are used. Some of the common uses of fume hoods include:

  • Working with hazardous chemicals
  • Conducting experiments that produce fumes or vapors
  • Handling radioactive materials
  • Decontaminating equipment
  • Storing hazardous materials
  • Cleaning up spills
  • Preparing samples for analysis
  • Performing quality control tests


Construction of fume hoods

Fume hoods are typically made of stainless steel or fiberglass. They have a work surface, a sash that can be raised and lowered to control the airflow, and an exhaust fan. The work surface is usually made of a non-porous material that is easy to clean. The sash is made of clear glass or plastic so that the user can see inside the hood. The exhaust fan is located at the top of the hood and it draws air from the work area into the hood.


Working of fume hoods

The working principle of a fume hood is based on the principle of dilution ventilation. The air inside the hood is constantly being drawn out and replaced with fresh air from the outside. This helps to dilute the concentration of hazardous materials in the air, making it safe for the user to work with.

The amount of airflow required to adequately ventilate a fume hood is determined by the type of hazardous materials being used. The higher the concentration of hazardous materials, the more airflow is required.


Safety precautions

There are a number of safety precautions that should be taken when using a fume hood. These include:

  • Always wear personal protective equipment (PPE) when working in a fume hood. This includes gloves, goggles, and a lab coat.
  • Keep the sash closed when the hood is not in use. This helps to prevent the spread of hazardous materials.
  • Do not overload the hood with equipment. This can restrict the airflow and make it unsafe to work with hazardous materials.
  • Dispose of hazardous materials properly. This includes following the proper procedures for cleaning up spills.
  • Do not reach into the hood with your hands.
  • Do not work in the hood if it is not properly functioning.


Applications of fume hoods

Fume hoods are used in a variety of applications, including:

  • Chemistry labs
  • Biology labs
  • Physics labs
  • Industrial settings
  • Hospitals
  • Research facilities
  • Manufacturing plants
  • Pharmaceutical companies
  • Environmental testing labs


Vayu Technologies is a leading manufacturer of fume hoods. We offer a wide range of fume hoods to meet the needs of different laboratories and applications. Our fume hoods are made of high-quality materials and are built to last. We also offer customization services so that you can get the perfect fume hood for your needs.

Contact us today to learn more about our fume hoods or to request a quote.

We are committed to providing our customers with the highest quality fume hoods and the best possible customer service.


Additional information

  • The sash should be kept closed as much as possible to prevent the spread of fumes.
  • The exhaust fan should be turned on before starting work and should not be turned off until work is complete.
  • The work surface should be kept clean and free of clutter.
  • Spills should be cleaned up immediately.
  • The fume hood should be inspected regularly for damage.


By following these safety precautions, you can help to ensure that your use of a fume hood is safe and productive.



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