Chemistry Hood
High-performance chemistry hood to eliminate hazardous fumes, chemicals, compounds and more. The laboratory fume hood is chemical and heat resistant. The chemical fume hood unsurpassed containment of chemical fumes and vapors with the lowest possible energy consumption.
Highest Performance
High performance. Protecting people. Mission accomplished.
Chemistry hood has been protecting lab techs since 1925. We design every lab fume hood to keep hazardous fumes away from you and your lab and maximize containment.
High-Performance Fume Hoods:
- 60 fpm or less face velocity
- At maximum sash opening height (25″ minimum)
- Tested per ANSI/ASHRAE 110
- Mannequin 3″ from sash plane
- A detector in the breathing zone
- 0 AM 0.05
Protector® Chemistry Hood
The Protector chemistry hood is the culmination of lab conquered seventy-five years of research and development in laboratory fume hood technology. The Protector chemistry hood offers unsurpassed containment of chemical fumes and vapors with the lowest possible energy consumption.
Smoke tests in traditional lab hoods show the tendency for contaminants generated in the interior to roll forward. Producing high concentrations of fumes behind the sash in close proximity to the user’s breathing area. In contrast, smoke tests on Protector chemistry hood show contaminants are removed in a single pass with a remarkable lack of turbulence. The result is a dramatic reduction in the concentration of hazards within the laboratory fume hood.
No Contaminants Escape The Chemistry Hood
This efficient airflow is created by several unique features of the Protector fume hood. The aerodynamic curve of the airfoil along with the large radial edge of the work surface function together to correct airflow prone to reversal in traditional fume hoods. This directs air to sweep the dish to work surface for maximum containment. Explicitly designed for robust containment during use clean sweep openings pull naturally accelerated inflow air from under the airfoil so that clean air continually flows in front of the lab fume hood user creating a constant protective barrier from contaminants.
The low profile aerodynamic sash handle directs airflow above and below. Reducing the probability of contaminated air escaping into the user’s breathing space. A continuous slot runs the entire height of the sash opening within the sash tracks. This passive opening allows small volumes of clean air to enter the chemical hood at the plane of the sash for an added barrier of protection.
The upper dilution air supply regularly bathes the laboratroy fume hood interior above the work area with clean air to eliminate chemical fumes along the sash plane near the user’s breathing area. This air is directed down the backside of the sash and the remainder is drawn through perforations into the upper fume hood chamber. This method of bypass inflow manipulation yields zero static pressure change and any sash position resulting in a constant volumetric rate of air into the chemical hood for continuous air volume applications and sufficiently restricting the bypass when used with a variable air volume mechanical system.
Traditional Fume Hoods Vs. Our Chemistry Fume Hood
Traditional By-Pass Fume Hood Design
Smoke tests on traditional fume hoods demonstrate the tendency for contaminants generated in the interior to roll forward producing high concentrations of contaminants behind the sash in close proximity to the user’s breathing zone.
Protector XStream Chemistry Hood Design
In contrast, smoke tests on the Protector XStream show contaminants removed in a single pass and a lack of turbulence. Horizontal air flowing toward the baffle forces contaminants to the rear interior, away from the user. The upper dilution air supply sweeps the upper interior to eliminate stagnant pockets of air and to prevent contaminants from concentrating behind the sash. This airflow pattern is accomplished without additional blower(s) or moving components.
The most significant and innovative feature of the Protector chemical hood is the rear baffle system. When the sash is open to its energy-conserving 18-inch height or optional 28-inch full open height the slots in the primary baffle direct air in non turbulent streams from the fume hood face into the baffle in a single pass. The secondary baffle located between the primary baffle in the back wall counteracts the upward air streams that create row or vortex in traditional lab hoods.
In addition to mitigating vortex dependent containment, the primary baffle slots are arranged by ingenious designs. This specific baffle slot pattern is designed to manipulate and optimize the face velocity profile. The result is a reduction in the deviation from the profile average and reduction of turbulence.
Proven Highest Performance Chemical Fume Hood
The industry standard for chemistry hood containment is defined as a hood that meets the CFA requirements for high performance. CFA defines this as a fume hood with the sash fully open face velocity of sixty feet per minute and when subjected to an ashtray 110 test has levels of tracer gas at or below 0.05 parts per million in the manufacturer’s test facility.
Amazingly when the protector chemistry hood is subjected to the ashtray 110 test method there is no detectable level of tracer gas outside the fume hood. Even at face velocities as low as 40 feet per minute. During independent testing the protector extreme performed well beyond C4 1 standards with a face velocity of 40 feet per minute and it sash fully open to protect her extreme was subjected to 50 feet per minute cross draft NIH protocol and tracer gas measurements in the chest of the mannequin. In each scenario, the fume hoods allowed 0.00 parts per million average levels of tracer gas outside the chemical fume hood. Although your safety officer or industrial hygienist will determine the actual face velocity setting for your fume hoods standard of performance demonstrates the factor of safety built into extreme containment.
Safety is foremost but the protector extremes. Energy efficiency is equally impressive. Energy consumption is directly related to the volumetric rate measured in cubic feet per minute. Achieving 60 feet per minute face velocity on a six-foot extreme with the sash and its full open position requires only 690 cubic feet per minute regardless of your desired operating face velocity the protector extreme requires the lowest cubic feet per minute and lowest operating costs offering unrivaled containment and lowest possible energy consumption. The Protector chemistry hood is the pinnacle of modern lab fume hood design.
Build Your Fume Hoods System
1. Select Fume Hoods
Protector XStream
Protector Premier
Protector XL
2. Select Work Surface
Spill Stopper
Protector Premier
3. Select Bast
Base Cabinet for acid, solvent or standard storage
Base Stand
4. Select Other Accessories
Airflow Monitor
Service Fixture
Sash Stop
5. Select Remote Blower and Ductwork
Blower
Damper
Weathercap
Protector® XStream® Chemistry Hood
A laboratory fume hood is a ventilated enclosure where harmful materials can be handled safely. Air flows into the lab hood to capture and contain contaminants, preventing their escape into the laboratory.
Smoke tests provide a visual inspection of the fume hood’s ability to contain fumes generated inside with a sash and the raised position. Smoke is exhausted evenly from all areas of the chemical hood. Aerodynamically designed components such as the sash foil, vertical fascia, baffle, and liner enhance the fume hood’s ability to capture fumes.
As the sash is lowered, the speed of the air passing through, the sash opening increases. The bypass chemistry hood is designed to minimize the fluctuations in face velocity, has a sash is lowered or raised.
Fixtures models feature:
Two pre-plumbed service fixtures with forged brass valves, lower right side with brass tubing for gas, and lower left side with copper tubing for cold water. We provide components for converting either or both fixtures to air and vacuum. We do not provide inlet tubing.
For Use with Remote Blower Specifications
Air enters the hood through openings along the top of the lab fume hood and underneath the airfoil; even when the sash is in the fully closed position. The baffled directs the air to follow specific flow patterns within the fume hoods and also generates a uniform velocity of air.
Fumes generated near the work surface are drawn into the lower opening, the baffle in conjunction with the sash foil directs the air currents to sweep the work surface on hoods with open slots along the edges of the baffle. Fumes generated in the middle of the chemical hood are drawn in from the sides.
Many conditions affect the efficiency and safe operation of any chemistry hood for maximum containment. Work should be performed at least six inches inside the lab hoods. Large apparatus or clutter inside the chemistry hood can obstruct the airflow and allow fumes to escape. Apparatus should be elevated on blocks to allow air to flow under it. Abrupt movements can cause turbulence, allowing fumes to escape the sash should be lowered or raised gently.
8′ models available with:
Optional split dual tempered safety glass vertical-rising sashes with cable and pulleys and powder-coated sash handles.
10′, 12′ and 16′ models feature:
By-pass block
Split dual tempered safety glass vertical-rising sashes with cable and pulleys, powder-coated sash handles and 10″ (25.4 cm) high static viewing windows to permit the sashes to rise without extending above the fume hoods. Four sashes on 16′ models.
By knowing how it functions most efficiently, you can ensure that your lab safety ventilation system is effectively protecting you and your important work.
Location is important for optimal chemistry hood performance. The lab fume hood should be located away from windows, doors, ceiling, air diffusers, heat registers or fans that alter the air patterns in the laboratory. Personnel walking by can disrupt the airflow. So the hood should be installed in a low traffic area. Lowering the sash lessens the effect of traffic and other external airflow disturbances. To get the maximum performance from this important piece of laboratory safety equipment, it is important to understand the design and proper operation of your laboratory fume hood.
Vendors
Applications
- Chemistry
- Laboratory
- Hazardous Fumes
- Chemicals
- CBD Oils
- Flavors Lab
- Hazardous Drugs
- Testing Lab
- Chemical Lab
- Pharmaceuticals Labs
- Material Testing
- Cosmetics Lab
- Material Lab
FAQ
- When should I use a lab fume hood?
- Use a chemistry fume hood anytime your work includes: Chemicals, Toxic materials, flammable chemicals, carcinogens, particularly hazardous substances, reactive & explosive materials, compounds that may spatter, toxic gasses (NH3, CO, F2, Cl2, H2S, NO2, etc.), odorous (hazardous or not)
- Why do I have to keep the laboratory fume hood sash closed?
- The sash is your shield against contaminants and injury. Keep the sash closed when you are not actively working at your hood.
- What can I store in the fume hoods?
- Typically, only ongoing experiments. Never store anything that blocks the sash from closing!
- What is face velocity?
- Face velocity is the speed of the air across where the opening of the air capture takes place. It is used to measures the hood’s safety and performance.
Who This Is For
Our chemistry fume hoods serve laboratories across every industry:
- University & Research Labs — organic chemistry, synthesis, analysis
- Pharmaceutical & Biotech — compound preparation, QC testing
- Healthcare & Clinical Labs — pathology, histology, specimen handling
- Government & Military — forensics, environmental testing
- Industrial & Manufacturing — chemical processing, QA labs
- High School & Community College — teaching chemistry safely
Request a Free Quote
Call (801) 855-8560 or email sales@labs-usa.com for expert help choosing the right fume hood.
Select the Hood, Exhaust System and Work Area as One System
A chemical fume hood does not perform by itself. Chemical use, containment goals, sash configuration, room air, location, ductwork, blower, work surface and user practices all affect the completed installation.
Start With the Hazard and Procedure
The correct enclosure depends on what the laboratory will handle and how the procedure will be performed. Before comparing models, document the chemical list, quantities, temperatures, frequency, apparatus dimensions, emission source and whether the process produces vapors, particulates, heat or aerosols.
Chemical inventory
List each chemical, its concentration, the largest quantity open at one time and whether future procedures may add new substances.
Procedure profile
Record heating, digestion, evaporation, mixing, distillation, powder handling and the duration and frequency of each process.
Apparatus envelope
Measure the equipment footprint and height, plus the clearance needed to load, operate and service it without blocking airflow.
Project constraints
Identify available exhaust routes, make-up air, utilities, room traffic, accessibility needs and the project schedule.
Not every enclosure is a chemical fume hood
Biological safety cabinets, clean benches, canopy hoods, glove boxes and powder enclosures use different airflow and filtration strategies. Select the containment device for the hazard; do not substitute based on appearance alone.
Choose the Ventilation Strategy
This is a project-level decision, not a simple product toggle. A qualified laboratory ventilation professional and the laboratory’s safety officer or industrial hygienist should confirm the final approach.
| Path | Best starting point | Critical questions before selection |
|---|---|---|
| Ducted chemical fume hood | General or changing chemical work where contaminants should be exhausted outside | Can the building provide exhaust and replacement air? What duct material, blower and discharge strategy match the chemicals? |
| Filtered / ductless enclosure | Repetitive, limited-quantity procedures using a known chemical list that has been assessed for compatible filtration | Which filter media is required? How will saturation be monitored, filters changed and chemical changes controlled? |
| Floor-mounted or distillation hood | Large, tall, heavy or roll-in apparatus that cannot fit a standard benchtop enclosure | What are the full apparatus and service clearances? How will loading occur without an operator standing inside while fumes are generated? |
| Special-application hood | Perchloric acid, radioisotope or another application requiring dedicated materials and exhaust design | Are washdown, radiused interiors, an integral work surface, dedicated exhaust, filtration or decontamination provisions required? |
Ductless selection requires a chemical assessment
Filter media and capacity vary. Ductless enclosures are generally appropriate only when the chemical list is controlled and compatible, quantities are limited, and a monitoring and filter-management plan is defined.
Specify the Work Zone
After choosing the ventilation path, define the usable workspace and the components that influence containment and day-to-day operation.
Hood size and interior clearance
Size around the procedure and apparatus—not only available wall width. Keep room for equipment, safe reach and airflow around the work.
Liner and work surface
Match materials to the chemicals, working temperature, cleaning agents and decontamination method. Dished work surfaces can help contain spills.
Sash configuration
Vertical sashes support loading tall apparatus; horizontal panels can act as a barrier while reducing the open area; combination sashes provide both modes.
Utilities and receptacles
Define gas, air, water, vacuum, data and power early. Controls should be accessible, clearly identified and located to reduce exposure to corrosive fumes.
Base cabinet or stand
Confirm support, depth, height, knee clearance and any separate chemical-storage requirement. Storage ventilation is a separate system decision.
Accessibility
Review reach ranges, controls, alarms, work-surface height and knee clearance for the intended users and applicable project requirements.
Plan the Building Interface Before Ordering
The blower, ductwork and room ventilation must be evaluated with the hood. Blower selection is based on required air volume and the total static-pressure loss of the complete exhaust path—not horsepower alone.
- Locate the hood away from doors, open windows, strong pedestrian traffic and supply-air patterns that can disturb the face.
- Confirm the laboratory can replace the air exhausted by the hood while maintaining the pressure relationship required by the design team.
- Map duct diameter, material, total length, elbows, reducers, filters, dampers, discharge stack and roof conditions before sizing the blower.
- Place a remote blower so the duct run remains under negative pressure where the system design calls for it; consider noise, weather and service access.
- Define airflow monitoring or alarms and how the final installation will be commissioned and rechecked after changes.
- Coordinate work surface, base, sink, service fixtures, electrical connections, controls and fire-protection requirements before release.
Containment is the goal
Higher face velocity is not automatically better; excessive velocity can create turbulence. ASHRAE 110 provides a method for testing containment as manufactured, installed or used. The project team must specify the required performance and verify it after installation.
A Practical Five-Step Submittal Path
Define the process
Submit chemical, quantity, temperature, frequency, apparatus and user information.
Select the enclosure
Compare ducted, assessed filtered, floor-mounted and special-application paths.
Configure the work area
Choose dimensions, liner, sash, work surface, base, fixtures, receptacles and accessibility features.
Engineer the interface
Coordinate air volume, static pressure, make-up air, ductwork, blower, discharge, utilities and controls.
Commission and train
Test the installed system, establish a performance baseline and train users on sash position, equipment placement and housekeeping.
Request a laboratory architect specification package or use the fume hood planning tool.
Fume Hood Selection Questions
Should I select a ducted or ductless hood?
Start with the chemical list and procedure. Ducted hoods exhaust contaminants outside and accommodate broader or changing chemical work. A filtered enclosure should be selected only after confirming filter compatibility, quantities, monitoring and replacement procedures for the defined application.
How is blower size determined?
Blower selection uses the air volume required at the hood plus the total static-pressure loss of the hood, duct, fittings, filters, dampers and discharge components. Duct length and configuration are needed before the blower can be sized correctly.
What affects containment besides face velocity?
Supply-air location, room traffic, open doors or windows, sash configuration, operator position, apparatus placement, thermal drafts and other equipment can all disturb airflow. Installed performance testing evaluates the assembled system in the room.
What information should be included with a quote request?
Provide the chemical/process list, quantities, operating temperatures, apparatus dimensions, desired hood width, room layout, exhaust route, utilities, work surface, base storage, accessibility needs and project location.
Can an old hood be reused after a renovation?
Existing hoods and ductwork require a qualified evaluation. Changes to room air, ductwork, blower performance or hood location can change containment, so the system should be tested after modification.
Build the Scope Before You Buy the Hood
Send us the room plan, chemical and process list, apparatus dimensions and available utilities. We’ll help organize the hood, work surface, base and building-interface requirements into a project-ready scope for review by your design and safety teams.