By Global Lab Supply- laboratory supplies
02/16/2022
A ductless fume hood
is a ventilation unit that removes toxic fumes and other airborne contaminants
from indoor environments. Fume hoods are typically used in labs to filter off
hazardous substances such as solvents, acids, bases, mercury, etc. They usually
sit above the work surface and contain an exhaust fan under the work surface
that draws contaminated air up at a high velocity.
Ductless fume hoods
are often used in laboratories due to the advantages of avoiding contamination
of lab coat linings by chemicals or fumes.
A Ductless Chemical Fume Hood prevents exposure
to chemical inhalation including exposure to carcinogens. A ductless system can
achieve better performance for air quality with less interference from local
atmospheric conditions, so they are less likely to suffer from poor performance
on humid days or on dusty or dirty operating surfaces.
How do ductless fume hoods work?
The main airflow path
is generally straight from inlets above the fume hood to vents in the rear
wall. The inlets can be either side or front so the user can choose a hood that
matches their work space and/or available storage space. The air flows in under
the hood and is circulated by convection, forced air or both using a standard
range hood exhaust fan.
Since the airflow
path may take a slight curve through the ductwork, there might be a slight
airflow disruption. Global Lab Supply build their
hoods with ductwork designed to counteract this. Sometimes ductless fume hoods
have their own fans installed.
What is the purpose of the chemical fume hood?
Fume hoods have many
useful applications such as
•
Safety
and containment of flammable vapors and liquids.
•
Removal
of hazardous fumes from a lab or factory.
•
Reduction
in exposure to hazardous vapors, dust and debris that could trigger health
problems.
·
A
few of the hazardous substances handled by fume hoods, some of which can pose a
significant risk to health, include
•
Cleaning
and degreasing chemicals, solvents, flammable gases, toxic gases, radioactive
materials, bacteria, pesticides, other toxic industrial chemicals.
•
Handling
and mixing highly concentrated acids, hydrochloric acid and hydrofluoric acid.
Conclusion:
This article provides
information and basic knowledge you need to understand how to choose
the right Ductless Chemical Fume Hood for laboratory and industrial
applications. Fume hood systems are very useful in chemical industries and
laboratories as chemical fume hoods are used to remove harmful chemicals, substances
and gases from the environment.
There has been a general
consensus about the need to improve the safety and hygiene situation in
laboratories and industrial environments. There is still a limited focus on research
and the development of innovative techniques and tools to achieve this. There
is also a need to ensure that these technologies are adopted within the scientific
community as a whole.
Original Source: https://theomnibuzz.com/what-is-ductless-chemical-fume-hood/
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