Acid & Alkali Resistant Corrosion Resistance Heat Resistant
Chemical Laboratory Fume Cupboard with Explosion Proof Firep
1. Product Description
A fume hood (sometimes called a fume cupboard or fume closet) is a
type of local ventilation device that is designed to limit exposure
to hazardous or toxic fumes, vapors or dusts.
A fume hood is typically a large piece of equipment enclosing five
sides of a work area, the bottom of which is most commonly located
at a standing work height.
Two main types exist, ducted and recirculating (ductless). The
principle is the same for both types: air is drawn in from the
front (open) side of the cabinet, and either expelled outside the
building or made safe through filtration and fed back into the
room. This is used to:
-protect the user from inhaling toxic gases (fume hoods, biosafety
cabinets, glove boxes)
-protect the product or experiment (biosafety cabinets, glove boxes)
-protect the environment (recirculating fume hoods, certain
biosafety cabinets, and any other type when fitted with appropriate
filters in the exhaust airstream)
Secondary functions of these devices may include explosion
protection, spill containment, and other functions necessary to the
work being done within the device.
2. Product Parameters
|Worktop Size (mm)||1260(W1)*795(D1)*1100(H1)||1560(W1)*795(D1)*1100(H1)|
|Worktop||20+6mm Ceramic||20+6mm Ceramic||12.7mm Solid Physiochemical Board||20+6mm Ceramic||20+6mm Ceramic||12.7mm Solid Physiochemical Board|
|Liner||5mm Ceramic Fibre||5mm Compact Laminate||5mm Compact Laminate||5mm Ceramic Fibre||5mm Compact Laminate||5mm Compact Laminate|
|Diversion Structure||Back Absorption|
|Control System||Touch-Tone Control Panel (LED Screen)|
|Fan Power||Less than 2.8 A|
|Socket Max. Load||5KW|
|Drainage Mode||Natural Fall|
|Storage||Double-Lock, Corrosion-Resistant, Damp-proof, Multi-layer Solid
Wood with Mobile Wheel|
|Application||Indoor No-blast, 0-40 ℃|
|Application Field||Organic Chemical Experiment|
|Face Velocity Control||Manual Control|
|Average Face Velocity||0.3-0.5 m/s Exhaust: 720-1200m³/h||0.3-0.5 m/s Exhaust:900- 1490m³/h|
|Face Velocity Deviation||Less than 10%|
|Average Illumination||Less than 500 Lux|
|Noise||Within 55 dB|
|Exhaust Air||No Residue|
|Safety Test||In Accord with International Standard|
|Resistance||Less than 70Pa|
|Add Air Function||Distinctive Structure (Need Exclusive Add Air System)|
|Air Flow Control Valve||Dia. 250mm Flange Type Anti-Corrosion Control Valve||Dia. 315mm Flange Type Anti-Corrosion Control Valve|
3. More About the Fume Hood
Fume hoods protect against chemical fumes and vapors, while
biosafety cabinets protect against pathogens and biological agents.
Biosafety cabinets are another category of laboratory equipment
that is frequently confused with fume hoods. Both use airflow to
protect, but the focus of protection is on different hazards.
A biosafety cabinet (also called a biological safety cabinet or
BSC) uses HEPA filters to remove infectious organisms from exhaust
air. Depending on the class and type, a biosafety cabinet may also
use HEPA filters on intake air to protect the product from
contamination. By contrast, a fume hood does not usually use HEPA
filtering on exhaust air vented outdoors.
A ducted fume hood relies on the facility's ventilation system for
venting exhaust air outdoors using ducts. The fan or blower is
typically located on the roof of the building, allowing for quiet
operation of the fume hood. To prevent recirculation of
contaminated air, the ductwork for a fume hood should be separated
from the rest of the facility's ventilation ducts.
A ductless fume hood, also called a recirculating fume hood, uses a
blower on the fume hood to pull contaminated air through a HEPA
filter, and then recirculates the air back into the room. The type
of filter required varies depending on the chemistry, so the
operator must ensure use of the proper filter for safety. Filters
also must be changed regularly for safety.
4. Detailed Photos
5. Fume Hood Maintenance
• Hoods should be evaluated by the user before each use to ensure
adequate face velocities and the absence of excessive turbulence.
• In case of exhaust system failure while using a hood, shut off
all services and accessories and lower the sash completely. Leave
the area immediately.
• Fume hoods should be certified, at least annually, to ensure they
are operating safely. Typical tests include face velocity
measurements, smoke tests and tracer gas containment. Tracer gas
containment tests are especially crucial, as studies have shown
that face velocity is not a good predictor of fume hood leakage.
• Laboratory fume hoods are one of the most important used and
abused hazard control devices. We should understand that the
combined use of safety glasses, protective gloves, laboratory
smocks, good safety practices, and laboratory fume hoods are very important elements in protecting us from a potentially hazardous
• Laboratory fume hoods only protect users when they are used
properly and are working correctly. A fume hood is designed to
protect the user and room occupants from exposure to vapors,
aerosols, toxic materials, odorous, and other harmful substances. A
secondary purpose is to serve as a protective shield when working
with potentially explosive or highly reactive materials. This is
accomplished by lowering the hood sash.
6. Project Cases