Fume Hood

Key Features:

1. Ventilation System:
   • Equipped with an exhaust fan that draws air from the laboratory and expels it outside or through a filtration system.
   • Ensures that harmful fumes, gases, and particles are effectively removed from the workspace.
2. Sash (Front Window):
   • A movable glass or transparent panel that allows access to the interior while providing a barrier between the user and hazardous materials.
   • Can be adjusted to control airflow and optimize containment.
3. Airflow Monitoring:
   • Includes airflow sensors or alarms to ensure proper ventilation and alert users if airflow is insufficient.
   • Maintains consistent face velocity (typically 0.3 to 0.5 m/s) for effective containment.
4. Construction Materials:
   • Made from chemical-resistant materials like epoxy-coated steel, stainless steel, or polypropylene.
   • Resistant to corrosion and damage from harsh chemicals.
5. Types of Fume Hoods:
   • Ducted Fume Hoods: Expel air outside the building through ductwork.
   • Ductless (Recirculating) Fume Hoods: Use filters to clean and recirculate air back into the lab.
   • Perchloric Acid Hoods: Designed for handling perchloric acid, with washdown systems to prevent explosive deposits.
   • Radioisotope Hoods: Equipped with lead lining for handling radioactive materials.
6. Safety Features:
   • Fire-resistant construction and explosion-proof designs for handling flammable substances.
   • Built-in spill containment and chemical-resistant work surfaces.
   • Emergency shut-off switches and alarms for added safety.
7. Energy Efficiency:
   • Variable Air Volume (VAV) systems to reduce energy consumption by adjusting airflow based on sash position.
   • Energy-efficient motors and fans.

Benefits:

• Protects users from exposure to harmful substances.
• Prevents contamination of the laboratory environment.
• Enhances safety and compliance with occupational health regulations.
• Provides a controlled workspace for handling hazardous materials.