Fume Hoods

Laboratory Safety - Air Flow

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Critical Ventilation and Performance for your Laboratory

Fume Hood Types & Features

Bypass Fume Hoods: Airfoil bypass fume hood models reduce turbulence of airflow through the unit, improving efficiency and performance.

Add-Air Fume Hoods: “Add air” fume hoods use a plenum to provide the majority of outside air required by the hood in a uniform, regulated supply.

ADA Fume Hoods: Provides all the features and capabilities of our standard Fume Hood line with special accommodations built in to meet the specific requirements needed to provide a safe work site for wheelchair operators

Perchloric Acid Fume Hoods: Highly-corrosive perchloric acid is stronger than sulfuric acid and poses an explosion risk in labs. Perchloric acid fume hoods are designed to not react with this volatile inorganic acid.

Variable Air Volume Fume Hoods: Variable air volume hoods are alternatively known as “constant air velocity hoods.” VAV hoods adjust air volume based on sash position, maintaining a constant flow velocity.

High Performance Fume Hoods: Designed to provide maximum personal protection at an economical operating cost.  Operating at an exhaust volume of less than half  of a conventional hood.

Radio Isotope Fume Hoods: Fume hoods designed for handling radioactive materials isolate radiation from users and from the environment. Radioisotope hoods are single-purpose and should not be used in any other application.

Low Bench Fume Hoods: These hoods are designed for low benches, allowing ventilation of large equipment or other oversized objects.

Walk-In Fume Hoods: Walk-in hoods reach completely or nearly-completely to the floor, allowing you to set up or manipulate large equipment inside the hood (while venting is disengaged).

Fume Hood Selection Process

Typically your lab planners will assist with the types of Fume Hood requirements for your laboratory. Below is a very basic overview to provide insight on the selection process.

There are two main factors to consider when selecting a Fume Hood style.

First consider the type of work being performed in the Hood. The use of perchloric acid or radioactive materials require a Fume Hood specifically designed for these materials. Large apparatus or complex set-ups may require the use of a low bench or walk-in Fume Hood to accommodate the space requirements.

The second consideration in selecting a Fume Hood style is the air consumption of the hood. Operation of a Fume Hood requires a relatively large volume of room air.

If you determine that the amount of air being supplied to the room is adequate to accommodate the exhaust volume of the Fume Hood the ByPass style Fume Hood would be an excellent choice.

If there is not enough supply air available, the Add Air style may be the right choice.

The Variable Air Volume style Fume Hood is designed to be used with an adjustable damper system in the ductwork. The use of this Hood will, when used in conjunction with a VAV control system, drastically reduce the total amount of air consumed. This makes the Variable Air Volume style Hood a good choice when trying to reduce air consumption for energy cost savings or when there simply is not enough available supply air.

Additional Fume Hood Options:

  • High-performance green energy-efficient hoods and technology
  • Polypropylene hood construction
  • Biological safety cabinets, laminar flow devices, HEPA filtration units and scrubbers
  • Highline interior clearance of 60"

Custom hood sizes and materials are available. Talk to our chemical fume hood sales team for detailed options.

 


Basic Flow Patterns of Common Fume Hood Types

Overviews of Fume Hood Types

Airfoil Bypass Fume Hoods

Our airfoil bypass fume hoods provide continuous flow of air to your laboratory. Along with keeping unwanted emissions at bay, our fume hoods last for years of continual use. You’ll have a reliable fume hood you can depend on.

Airfoil Bypass Fume Hood Specs.

Purpose: Reducing Trubulence of Airflow through the Unit
Benefits: Improving Efficiency & Performance
Dimensions: 7/32" Safetly Glass Panel, 18" High Sash Lock
Materials: White Resin-Chem, Nylon, Epoxy, Stainless Steel
Lighting: Vapor Proof T-8 Fluorescent Light Fixture with Bulbs
Build: 16 Ga. Internal Structural Frame
Features: Gasketed Access Panel

Variable Air Volume Fume Hoods

Variable Air Volume fume hoods are essential for saving money and energy in research labs and academic facilities. Since the sash can be partially closed to reduce air flow, VAV fume hoods are more energy efficient than many other hood types.

Variable Air Volume Fume Hood Specs.

Purpose: Reducing Trubulence of Airflow through the Unit
Benefits: Improving Efficiency & Performance
Dimensions: 7/32" Safetly Glass Panel, 18" High Sash Lock
Materials: White Resin-Chem, Nylon, Epoxy, Stainless Steel
Lighting: Vapor Proof T-8 Fluorescent Light Fixture with Bulbs
Build: 16 Ga. Internal Structural Frame
Features: Gasketed Access Panel

Add Air Fume Hoods

Unlike other chemical fume hoods on the market, this product uses a plenum to regulate the stream of outside air in an isolated space. This provides better ventilation for laboratories, classrooms, and research facilities.

Add Air Fume Hood Specs.

Purpose: Reducing Trubulence of Airflow through the Unit
Benefits: Improving Efficiency & Performance
Dimensions: 7/32" Safetly Glass Panel, 18" High Sash Lock
Materials: White Resin-Chem, Nylon, Epoxy, Stainless Steel
Lighting: Vapor Proof T-8 Fluorescent Light Fixture with Bulbs
Build: 16 Ga. Internal Structural Frame
Features: Gasketed Access Panel

High Performance Fume Hoods

Designed to provide maximum personal protection at an economical operating cost.  Operating at an exhaust volume of less than half  of a conventional hood, the High Performance Fume Hood not only saves money by reducing the volume of air that needs to be conditioned and exhausted, it reduces the size of the HVAC equipment saving on the original capitol investment.

High Performance Fume Hood Specs.

Purpose: Reducing Trubulence of Airflow through the Unit
Benefits:  Reduced Opertaing Costs & Efficient Performance
Dimensions: 7/32" Safetly Glass Panel, 18" High Sash Lock
Materials: White Resin-Chem, Nylon, Epoxy, Stainless Steel
Lighting: Vapor Proof T-8 Fluorescent Light Fixture with Bulbs
Build: 16 Ga. Internal Structural Frame, Round Profiles
Features: More Aerodynamic Design & High Performing Baffle

Radio Isotope Fume Hoods

Stainless steel lining and work surface with coved corners that facilitate thorough cleaning and a reinforced countertop to support lead bricks, are some of the features incorporated into the Radio Isotope Hood. These features will help to insure operator safety and convenience in procedures that involve the use and handling of radioactive materials.

Equipped with a type 304 stainless steel sash frame with a full width flush pull and is glazed with 7/32" thick laminated safety glass. A counterweight provides for one finger operation of the sash at any position. A lower stainless steel airfoil acts as a sash stop to maintain a 1" space, below the closed sash, which allows air to continuously flow across the work surface.

Airfoil Pechloric Acid Fume Hoods

This Fume Hood is specifically designed for the use of perchloric acid. A coved stainless steel liner with integral work surface, an internal water wash down system and water collection trough provide for detailed cleaning of the Hood interior. In addition, the interior baffles are also removable for cleaning to prevent the dangerous build-up of perchlorates.

The Perchloric Acid Fume Hood has an internal bypass located above the sash. The bypass operates automatically, opening when the sash is closed and closing as the sash is raised. The bypass provides for a relatively constant face velocity at any sash position.