Chengdu Ample Import And Export Co., Ltd. |
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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
Model Parameters | YT-1500A | YT-1500B | YT-1500C | YT-1800A | YT-1800B | YT-1800C |
Size (mm) | 1500(W)*865(D)*2400(H) | 1800(W)*1205(D)*2400(H) | ||||
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) | |||||
Input Power | 220V/32A | |||||
Fan Power | Less than 2.8 A | |||||
Socket Max. Load | 5KW | |||||
Faucet | 1 Set | |||||
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
Why Workplace Practices Matter
Before beginning work, one of the most important practices lab
technicians should conduct is to ensure the exhaust fan is working.
The exhaust system performs the main job of a hood, so if not
working properly, the hood will not operate effectively.
To do so, they should check:
-The baffles, which are the movable partitions that create openings
in the back of the hood. These keep airflow uniform, which
increases efficiency.
-For any obstructions, to ensure airflow is not impeded.
-The airflow monitor, if part of the hood's design. Checking the
status of the airflow monitor is important because the device will
alert you if any suspected changes in airflow occur.
The following are some further examples of routine practices that
should take place to ensure a fume hood operates efficiently and
safely:
-Follow manufacturer's guidelines regarding the placement of
apparatus. In general, all work should be conducted and all
apparatus should be kept at least 6 inches back from the hood's
face.
-Keep the fume hood's sash between you and the work you are
conducting.
-Remove any obstructions from the hood slots and baffles to ensure
good airflow remains.
-Follow proper laboratory design to reduce outside airflow
influences, such as positioning the fume hood away from doors and
minimizing foot traffic patterns.
-Do not store chemicals or lab equipment in the hood. If large
equipment must be stored in the hood, place pieces on blocks to
allow air to flow under the equipment.
-Avoid sources that may cause a spark inside the hood, including
electrical receptacles.
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
exposure.
• 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
7. FAQ
6 Questions to Ask When Buying a Fume Hood:
-Which chemicals will you use within the hood?
-Is a ducted or ductless hood best suited to your needs and
available space?
-Where will you place the fume hood in the lab? Consider workflows,
access to external exhaust systems, and competing air patterns.
-What size fume hood will best suit your needs? Be sure to consider
what (if any) equipment will be enclosed in the hood.
-Are any service fixtures or accessories such as airflow monitors,
electrical outlets, water, or gas fixtures required?
-Are base cabinets for acid, solvent, or non-chemical storage
required?