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
Fume hoods have proper ventilation
Breathing in harmful chemicals can cause toxins to lodge in your lungs or enter the bloodstream. While inhaling vapors may only result in dizziness at first, over several years it can cause liver damage. By design, a fume hood provides a barrier between lab workers and toxic fumes by filtering the air inside the laboratory.
Fume hoods can either be ducted or ductless.
Ducted fume hoods remove the air from the laboratory and disperse it into the atmosphere outside. While many ducted hoods employ constant air volume (CAV) systems, variable air volume (VAV) systems are a new generation of hoods that reduce energy costs. VAV systems reduce the volume of the air exhausted as the fume hood sash is closed.
Ductless fume hoods recirculate the air by filtering it before redistributing it back into the laboratory. Different filters are required for different materials, so ductless hoods should only be used when the material is known and doesn't change.
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
What will you be doing inside the hood?
Try to document as much as you can about the application. What chemicals are used, and how are they used? Is heat involved? What volumes of chemicals will be used at a given time? Most importantly, know the answers to the following questions:
-Do you use Perchloric Acid?
-Do you use Hydrofluoric Acid (HF)?
-Are you working with Radioisotopes and require the use of lead bricks?
What size of fume hood do you need?
This is a four-part question:
I. How wide do you want the fume hood to be? Ample offers fume hoods from 30 inches wide to 16 feet wide, with many options in between.
II. Will there be equipment enclosed in the hood? If the answer is yes, then you must answer parts III and IV.
III. What are the dimensions of the equipment? This information is essential to determining how deep the hood needs to be to house your equipment.
IV. Do you need a bench-top or floor mounted hood? Applications that use extra-large equipment, such as 50-gallon drums, or applications that require equipment to be wheeled into the hood via a cart would require a floor mounted hood.