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Laboratory Fume Hood

A laboratory fume hood is an essential piece of equipment in research labs designed to protect scientists, researchers, and laboratory personnel from exposure to hazardous fumes, vapors, and chemical substances. It consists of a ventilated enclosure with a clear sash or window, allowing researchers to work safely with potentially harmful materials.

Key features of a laboratory fume hood include :-

Construction Material

Laboratory fume hoods are typically constructed using materials like stainless steel or corrosion-resistant coated steel for durability and chemical resistance. The interior surfaces are often made from materials like epoxy resin to withstand chemical spills.

Exhaust System

Fume hoods are equipped with a robust exhaust system, including a blower or fan, ductwork, and a chimney or stack. The exhaust system creates a negative pressure zone within the hood, pulling air and contaminants away from the user and expelling them safely outdoors.


The front of the fume hood features a transparent sash, usually made of tempered safety glass, which can be raised or lowered to control the airflow and provide a barrier between the researcher and hazardous substances.


Interior lighting is integrated into the fume hood to illuminate the workspace, ensuring clear visibility during experiments.

Airflow Monitor

Most modern fume hoods include airflow monitors and alarms to alert users to inadequate airflow, which could compromise safety.

Filtration Options

Some fume hoods come equipped with built-in filtration systems, such as HEPA filters or carbon filters, allowing for recirculation of air in cases where external venting is not feasible.

Size and Configuration

Fume hoods come in various sizes and configurations to accommodate different laboratory needs, from small benchtop hoods to large walk-in hoods for more extensive experiments.

Safety Standards

Fume hoods should comply with safety standards and regulations, such as ASHRAE 110, to ensure their effectiveness in protecting lab personnel.


Regular maintenance, including inspections, certification, and filter replacements, is essential to ensure the fume hood continues to function correctly and provide a safe working environment.

Proper usage and maintenance are crucial to ensure the effectiveness of laboratory fume hoods in safeguarding researchers and maintaining a clean working environment. Regular inspections, airflow checks, and adherence to safety protocols are essential for the continued safety and efficiency of these indispensable tools in research labs.