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Overview
Fume hood is an equipment used to eliminate toxic chemicals. Every lab that practices experiments and research that involves a huge amount of chemicals would definitely have this in their lab. It basically works in removing all sorts of contaminants that are found in the air in the lab environment. This includes all types of chemical gases, dusts, vapors as well as fumes. The chemical contaminants usually tend to surround in the laboratory environment due to the lack of ventilation hence lab technicians often use the help of a fume hood in eliminating all the bad stuff out from the air. The air that flows into the hood would be removed via the exhaust system after filtering all the pollutants out. Since there are 2 types of the fume hood, it also works in a slightly different way.
Ducted fume hood
A ducted fume hood is a rather common option that you could find in the lab. It is easily available that lab technicians can get it from a lab fume hood supplier malaysia. It has a ventilated enclosure and usually functions within the building or the infrastructure. This type of fume hood uses an HVAC system to remove all types of hazardous fume from your lab setting. A ducted fume hood’s structure consists of a base, work surface, hood, blower and also a ducting element that helps eliminate the polluted air.
However when this type of fume hood is installed, it is crucial to take into account the capacity that your specific fume hood can clean. It has its required volume of air to function so do your research in this matter. The ducted fume hood needs constant supervision from people to ensure it is operating properly.
Ductless fume hood
Ductless fumes on the other hand are not as commonly used as the ducted fume hood. It is often considered as the second option when it comes to the usage in the lab. Although it is becoming popular among lab technicians and lab practitioners, they don’t use it as much as the ducted ones. The ductless fume hood would work differently than the ducted fume hood. It uses a carbon filter within itself to ease the process of air filtration that occurs.
The ductless fume hood is only able to provide filtration to working environments that are small and working environments that use very less chemicals. Usually the capacity that it is able to handle is not more than 10 chemicals on each application. It is also able to filter out contaminants with a volume that is less than 500 ml. This could be a contributing factor to why it is not often used in most laboratories. The ductless fume hood needs less supervision and works well in a small lab environment.