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Modern labs are embracing modular setups and flexible furniture. A recirculating hood fits perfectly with this because it provides you with the ability to move it around to anywhere in the lab. With a plug and play setup, you can use a ductless fume hood in various locations as and when you need it. This can give your operators the opportunity to work to their full capacity without being constrained by the design of your lab.
A ducted unit is permanently fixed in place and offers no flexibility at all. These tend to be installed in older buildings or ones with limited access. However, with a ductless fume hood, you can even take the unit with you if you ever move to a new laboratory or location.
Filtered hoods require ongoing operation and maintenance. This means that users need to know how to operate the fume cupboard safely and understand how to maintain the filtration system. Unlike with a ducted cabinet, ductless cupboards require regular DOP testing and filter replacements. You will need to ensure that someone in your laboratory can take full ownership of the maintenance and handling of the filter replacements, including ordering new ones and changing them as required.
| 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) | |||
Ductless fume hoods are used in various fields. Some of the most common applications are the following:
Choosing the right fume hood for your laboratory can be a challenge, and ductless fume hoods could be the solution you have been looking for. Whether you are working in an educational laboratory or an industrial location, having the right fume hood at your disposal is crucial. This piece of equipment is so important for the safety of your lab and your team, so choosing the right one is vital.
probably the most important consideration is the type of chemicals that your laboratory uses. The majority of ductless fume cabinets are only suitable for process-specific or light-duty fumes. Before you decide if this unit is right for you, compile a list of all the chemicals and the quantities of each. From this, you should be able to determine if a ductless hood would work in your lab. If your laboratory use is likely to change over time, or you do not know what type of chemicals will be used in future, then this fume extraction system might not be the best choice for you. The safety and health of your employees or operators should be your top priority, so the type of chemicals you are using will be the main deciding factor on whether a ductless fume hood is right for you.
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