The benchtop
ductless fume hoods are also commonly referred to as the recirculating fume
hoods. These are portable and ductless enclosures where the folding sash helps
in removing different types of hazardous fumes, toxic vapors and other
particles from the lab environment.
The air gets
directed towards the filter chamber. This chamber houses different types of
filter media like HEPA and Carbon and this is
dependent on the exact type of the particulate matter or vapor which gets
generated. The different combinations of filtrations are available like two
types in carbon filters, one type of HEPA filter and a combination of HEPA and
carbon filter.
You will be
able to use the standard carbon filters in order to chemically remove the
organic vapors by adsorption process. The acid gases, ammonia are specifically
targeted in carbon filters. HEPA filters provide 99 percent efficiency in
removing particulate matters and are useful with chemical powders and other
particulates.
The prime
advantage of the Benchtop
Ductless Fume Hoods is that they come with a very cheap installation process as there is no
special ductwork required and wall penetration can also be ignored. Also
another main benefit is that the ductless exhaust hoods are portable and hence
they are easily moved from one location to the other within the lab.
Horizontal flow hoods:
The
horizontal flow hoods are a part of the laminar flow system. It is also a
crucial concept that helps in the control of particulate contamination. The
laminar airflow is basically defined as the air which is moving at a constant
speed in a constant direction. The air removes all particulate and toxic
material and helps to keep the lab environment free from toxicity. The
horizontal benchtop flow hoods are also portable and have a simple design. This
design ensures that the cleanest areas are the ones nearer to the face of the
filter.
In laminar
flow hoods there is the question about the direction in which the air should be
moving. In the horizontal
laminar flow hoods the air flow is from the filtered position which is
behind your work surface. You will need to choose a laminar flow hood depending
upon several issues like the specific requirements for the clean environment,
the location of the process, the design of your work surface; the operator’s
safety issues should also be addressed.
The advantages of these benchtop flow hoods:
1. They will reduce a lower the
turbulence from the air striking your work surface.
2. There is no sash and hence it will be
relatively easier for working and positioning your equipment. But you need to
be careful as the air will blow directly towards the face of the operator.
3. The hands and the gloves would not be
that contaminated.
For more
information, you must search for “benchtop ductless fume hoods” and “horizontal
flow clean bench” on the internet. You can also contact us for further query!