A Fume Hood is a ventilated enclosure commonly used in laboratories to capture, contain, and exhaust hazardous fumes, vapors, dust, or airborne contaminants generated during experiments or chemical handling. It protects laboratory personnel by maintaining a barrier between them and harmful substances while ensuring clean indoor air quality.
Core Functions and Purpose
Containment of Hazardous Substances – Prevent harmful fumes, vapors, dust, and chemicals from escaping into the laboratory environment.
Air Filtration and Exhaust – Capture contaminated air and either filter it (using HEPA/activated carbon filters) or vent it safely outside the facility.
Personnel Protection – Provide a physical barrier (sash) and controlled airflow to protect lab workers from chemical exposure.
Protect Laboratory Personnel - Minimize exposure to toxic or flammable chemicals.
Maintain Clean Air - Reduce contamination in laboratories by controlling the release of hazardous fumes.
Support Safe Laboratory Practices - Ensure compliance with safety standards such as OSHA, NFPA, and ISO cleanroom guidelines.
Product Types & Specifications
1. Ducted Fume Hood
2. Ductless / Recirculating Fume Hood
3. Bench-Top / Mini Fume Hood
4. Walk-In / Large Fume Hood
5. Laboratory Radioactive / Special Fume Hoods
Common Specifications
Material & Construction - Common materials: Epoxy resin, stainless steel, phenolic resin, or powder-coated steel.
Airflow & Exhaust - Face velocity: Typically 0.3–0.5 m/s for chemical hoods.
Dimensions & Size - Small benchtop: 3–4 ft width. Standard lab hood: 4–8 ft width. Walk-in or industrial hoods can be customized.
Power Supply & Accessories - Typically 220–240V AC for lighting and fan operation.
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FAQ's
Can fume hoods be customized? Yes,
fume hoods can be customized in terms of size, airflow capacity, material,
filtration system, and additional features like alarms, lighting, and
automation.
Are fume hoods energy-efficient? Modern
fume hoods use variable air volume (VAV) systems to adjust airflow based on
usage, reducing energy consumption while maintaining safety.
What materials are fume hoods made of? Fume
hoods are typically made from corrosion-resistant materials such as
powder-coated steel, stainless steel, or chemical-resistant plastics, with
tempered glass sashes for visibility.
How does a fume hood work? Fume
hoods draw contaminated air through an exhaust system, often passing through
filters (like HEPA or carbon filters), and then release it outside or
recirculate it after purification. The sash (glass window) acts as a barrier
between the user and harmful substances.
What is a fume hood? A
fume hood is a ventilation device used in laboratories to safely capture,
contain, and exhaust hazardous fumes, vapors, or dust, protecting users and the
surrounding environment.