Product Description
A chemical fume hood is required anytime your work involves:
• Volatile chemicals
• Flammable materials
• Carcinogenic materials
• Toxic gasses
• Chemicals with a National Fire Protection Association (NFPA) Health rating of 3
or 4
• Reactive or explosive materials
• Materials which exhibit strong odors both hazardous and non-hazardous
Chemical fume hoods can not be used with:
• Perchloric acid due to it causing significant corrosion to the duct system.
Specially designed fume hoods and ducting systems are required for the safe use
of perchloric acid.
• Biohazardous or potentially biohazardous materials. Chemical fume hoods do
not have the capability to mitigate the risks posed by biohazardous materials,
only a biosafety cabinet (BSC) may be utilized to process such material.
Product Parameters
| Model Specification |
WJ-1500A |
WJ-1500B |
WJ-1800A |
WJ-1800B |
| External dimensions of equipment(mm) |
1500(W)*1205 (D) *2400 (H) |
1800(W)*1205 (D) *2400 (H) |
| Dimension of works pace (mm) |
1260(W1)*780(D1) *1100 (H1) |
1560(W1)*780(D1) *1100 (H1) |
| Panel material |
20+6mm thick butterfly ceramics |
| Material of internal lining board |
5mm thick ceramic fiber board |
| Diversion structure |
Lower air return |
| Control system |
Button control panel (LCD panel) |
| PH value control |
The medium is alkaline water solution; manual monitoring, and manual control through acid pump and alkali pump. |
| Input power |
Three-phase five-wire 380V/50A |
| Current for air fan |
Not over 2.8A(380V or 220V can be directly connected) |
| Maximum load of socket |
12 KW(total of 4 sockets) |
| Water tap |
1 set (remote control valve + water nozzle) |
No |
1 set (remote control valve + water nozzle) |
No |
| Water discharge way |
Magnetic chemical pump strong discharge |
| Using environment |
For non-explosion indoor use, within 0-40 degrees Celsius. |
| Applicable fields |
Inorganic chemistry experiment; Food, medicine, electronics, environment, metallurgy, mining, etc. |
| Ways of Purification |
Spray sodium hydroxide solution, no less than 8 cubic meters/hour |
Spray sodium hydroxide solution.no less than 12 cubic meters/ hour |
| Ways of surface air speed control |
Manual control (through the electric air valve to adjust the exhaust air volume or adjust the height of the moving door) |
| Average surface air speed |
0.6-0.8 m/s Exhaust air volume: 1420-1890m3/h (when door height h =500mm) |
0.6-0.8 m/s Exhaust air volume: 1760-2340m3/h (when door height h =500mm) |
| Speed deviation of surface air |
Not higher than 10% |
| The average intensity of illumination |
Not less than 700 Lux; Standard white and uv-free yellow LED lamps; The illumination is adjustable. |
| Noise |
Within 55 decibels |
| Flow display |
White smoke can pass through the exhaust outlet, no overflow. |
| Safety inspection |
No spikes, edges; Charged body and the exposed metal resistance is greater than 2 mQ; Under 1500V voltage, no breakdown or flashover occurred for 1min test. |
| Resistance of exhaust cabinet |
Less than 160 pa |
| Power consumption |
Less than 1.0kw/h (excluding power consumption of fans and external instruments) |
Less than 1.2kw/h (excluding power consumption of fans and external instruments) |
| Water consumption |
Less than 3.2L/ h |
Less than 4.0L/ h |
| Performance of wind compensation |
With a unique wind compensation structure, the volume of the wind will not cause turbulence in exhaust cabinet and will not directly blow to the staff (need to connect to the air compensation system of the laboratory) |
| Air volume regulating valve |
315mm diameter flanged type anti-corrosion electric air flow regulating valve (electric contact actuator) |
Our Advantages
The volume of air that passes through a fume hood is constant and sash position does not control this value. Sash position does control the velocity at which the air passes through the fume hood. Raising the sash will reduce airflow velocity while lowering the sash will increase airflow velocity. Airflow velocity is a major factor that determines chemical vapor capture, a higher airflow velocity will contain vapors better than a lower airflow velocity. It is good practice to work with the sash as low as possible, at a minimum the sash should be below the safe sash operating marker.
The sash is rated to provide a certain degree of protection from explosions, fires, and chemical sprays. If you are working with reactive substances it is recommended to also utilize a portable blast shield in order to provide a higher degree of protection.
The hood should be used for ongoing experiments and not for storage of bulky equipment or excess chemicals. It is imperative not to store anything in the hood that blocks the sash from closing. If large pieces of equipment are required to be stored in the hood it is recommended to raise the equipment off of the working surface by a few inches with blocks to allow for better airflow around the equipment.
Detailed Photos
Application Cases
When the exhaust is running, it sucks in volumes of air through the open side (never run the exhaust with the hood completely closed) and vents it through the duct. The duct may throw the fumes right outside the room in the air, or may run it through a filtration system, depending upon the severity of the experiment.
Some advanced laboratory fume hoods have microcontrollers inside them, which you can use to control the exhaust. You may set various suction levels for given setups and later use these quick setups for particular experiments. You can also control the fan/pump power during the experiment too, and the lights as well.
Inside the fume hood, there are facilities to let you work. For example, there is almost always some good lighting system in the cabinet. There should be LPG and water connections in the hood, and a drain too in case of spills.
The air suction system is generally placed on top of the box or on the backside (the side towards the wall). This system is generally made up of a strong exhaust fan or air pump and accompanying air duct. The strength of the pump lies in the airflow strength starting from 4 to 8 meters per second to more.
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