What Are Fume Hoods?

A fume hood is a device used to limit exposure to toxic fumes and vapors. Most often used in laboratories, these units are vital for securing personnel safety around harmful chemicals. Depending on the type, the unit either funnels the chemicals outside to prevent contamination of a small lab space or it filters out the fumes via a certified filter. A fume hood is a box-like units with a tall base to allow use while standing. For effective use in all types of laboratories, units come in several shapes and sizes and filter a variety of fumes.

Fume Hoods
White Fume Hoods

What is a fume hood used for?

A fume hood is a form of regulation for environments in danger of harmful vapors and fumes. To protect workers from detrimental effects, a fume hood will dispense of the harmful chemicals, allowing individuals to do their job safely. Laboratory employees can work with substances directly under the fume hood or simply place the substance inside the unit after the work is done. Either way, workers can feel confident in their safety, despite handling toxic chemicals and vapors.


Safety for the user, the experiment, and the environment

Containment in case of spills

Protection from explosions and reactions

Wide variety of styles for different lab settings

Components of a Fume Hood


  • Airfoil
  • Hood Body
  • Sash
  • Work Surface
  • Baffles
  • Exhaust

The Types of Fume Hoods

Different labs require different measurements, so there are several types of fume hoods to choose from. LabDS provides a variety of fume hood sizing options to encompass every potential laboratory need.

Ductless Fume Hoods


A Ductless fume hood uses carbon filters to remove fumes and vapors from a laboratory. Carbon filtration, an advanced technology used within a ductless fume hood, is an eco-friendly choice for both the user and the environment. Instead of funneling the fumes outside, the fume hood filters out the harmful fumes and then returns the clean air back into the laboratory. Ductless fume hoods are also energy and cost efficient and even offer electronic monitoring in order to routinely test the performance of the filtration system.

Chemical Fume Hoods


A Chemical fume hood is used in laboratories where dangerous chemicals are handled in the workplace. This type of hood is specifically designed to allow laboratory workers to work with these chemicals without exposing themselves to the harmful drawbacks associated with them. Featuring quality steel and a design that exceeds SEFA standards, this unit will ensure workers can work with chemicals safely. The innovative design of the fume hood allows users to have a full view of their work and laboratory through a sash.


An ADA Fume Hood is designed and built to be completely ADA-compliant in order to ensure a safe work environment. Every feature including lights, switches, epoxy-coated steel exterior and digital airflow monitors is expertly engineered to meet the necessary safety requirements. ADA fume hoods can also be hand-operated and come with a standard stationary glass viewing panel with a safety glass counterbalanced sash.


The canopy fume hood is a ventilation system for non-toxic materials that removes heat steam and odors. These units are often used over ovens or steam baths and are mounted to a wall or the ceiling for easy removal and accessibility. These types of fume hoods can also be customized to fit the exact space in a laboratory in order to effectively ventilate the area.


Biosafety cabinets and fume hoods are used in labs that handle communicable diseases and provide an enclosed, ventilated workspace. With these units, individuals can work with materials potentially contaminated with pathogens that require biosafety levels. This equipment ensures the workers in the lab stay safe from any harmful chemicals or materials and include total recirculation and partial exhaust.


An Extractor Arm fume hood is a local exhaust ventilation device that ventilate local fumes, odors and air streams in a lab. The typical size of an extractor arm fume hood is 2”, 3” or 4”. Each of these sizes can be mounted on a bench, wall or ceiling. The variety of designs are to ensure the perfect fit for any laboratory or workplace.


Common accessories include lab blowers, ventilation ducting in PVC, aluminum, stainless steel, sheet metal and lattice rod assemblies for distillation rack applications. Each accessory is specifically designed so the fume hood is easier to use for the lab worker and safer for the materials in the lab environment.


A Low Air Flow fume hood operates at a lower rate than a standard unit meaning they take up less space in a lab and can save up to 40% on an energy bill. They reduce energy intake by reducing the amount of conditioned air required to fill a room. You can check with an expert to determine if a low air flow fume hood is the right option for your lab.


A Perchloric Acid Fume Hood is designed specifically to be used with perchloric acid in order to prevent perchlorate salt formations. These steel devices feature a bench top and are available in a variety of widths in order to fit any lab environment. The grade of steel used in the design of Perchloric Acid Fume Hoods provides the ultimate protection from the perchloric acid.


A Variable Air Volume Fume Hood has control over the air that is exhausted from the unit and reduces the costs of the device by maintaining a constant velocity. These items are sold to be used with exhaust control systems that other manufacturers provide. They come with a sash in a full view version that allows for the user to have a clear line-of-sight while still protected as they work. It also provides a great deal of interior lighting to assist with visual clarity.


A walk in Fume Hood is used for labs that use large accessories and materials, yet still need an efficient way to ventilate the odors and toxic fumes. Walk in units allow users to securely work with plus-sized, potentially harmful materials in an environment that actually ventilates the fumes and odors. The Walk in device can even hold added accessories, such as lattice rods for hanging beakers, in order to make the workspace as functional as possible in each laboratory.


A Radioisotope Fume Hood is used in laboratories that handle radioactive materials. These special devices help ventilate out harmful fumes and odors while also protecting against corrosion and cross contamination. A corrosion resistant blower is necessary to secure the safety of this unit as well as stainless steel lines and a safety glass rising sash.


A Polypropylene Fume Hood is created for labs that use acid-rich materials and chemicals. These units ventilate the inside air, resist against damage caused by chemicals and are non-porous so they can be used safely with food research. Reduced air back flow also allows for a much smoother process.

Which Type of Fume Hoods Do You Need?

There are a few crucial questions to consider when determining the best fume hood for your laboratory:

  • What types of chemicals and materials are you using that need to be ventilated or safely contained?
  • What size of materials are you using?
  • What energy levels is your laboratory able to maintain?
  • Is your lab able to fit a box-like fume hood, or would a mounted canopy fume hood fit better?
  • What kind of accessories are needed to make the fume hood safer for users?

For more information about selecting the best fume hood for your laboratory, talk with the experts at LabDS. They will work with you to provide the perfect equipment that will keep workers and the lab safe and sound.

Settings Fume Hoods are Used in…








How to Use a Fume Hood

A fume hood is an effective way to get rid of odors, fumes and harmful reactants in laboratory environments. However, if not used properly, they may not keep the user as safe as needed. Follow these steps when using a fume hood in order to ensure complete lab safety for the user.

  • Put the equipment or chemicals you are using as far back in the fume hood as possible in order to ensure that the fumes are being removed as effectively as possible.
  • Always turn on the hood light to see clearly inside.
  • Check the airflow monitor before use to make sure the airflow is correct.
  • Adjust the sash to the proper height while using. The typical fume hood indicates the appropriate sash height on the side of the hood.
  • Always close the sash of the fume hood when finished working or even when walking away from the unit for a period of time.

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