Fume hoods are our core laboratory safety product, designed to capture various hazardous fumes, vapors, toxic gases, and fine particles generated during laboratory chemical testing.

It draws contaminated air into the cabinet and then discharges the exhaust directly outdoors, or treats and reuses it through the filter components inside the fume hood equipment.

This design is excellent, as it ensures that operators do not inhale harmful chemicals while conducting experiments, and also prevents toxic substances in the air from contaminating the experimental samples.

Purpose:

Fume hood: A piece of clean equipment specifically designed for laboratory environments. The core function is to avoid chemical hazards and prevent the spread of dangerous vapors and dust into the work area, thereby averting area contamination and personnel injury.

Exhaust hood: This is a general-purpose ventilation device. It is typically installed in restaurant kitchens or factory workshops, it is primarily used to exhaust excess heat, cooking fumes, and everyday odors. It should be noted that it cannot handle laboratory-grade toxic chemicals.

Design:

Fume hood: Equipped with a calibrated inward airflow system. Its structure can reliably confine toxic gases within the cabinet, and a dedicated filter module can be installed to capture chemical residues before exhaust gases are discharged.

Exhaust hood: Compared to fume hoods, its internal structure is relatively simple. It consists only of pipes that exhaust air to the outside, there is a lack of dedicated airtight isolation layers or chemical filtration designs.

Applications:

Fume hoods: Widely used in university laboratories, chemical plants, and medical testing facilities. Highly suitable for work environments where personnel frequently come into contact with corrosive chemicals, toxic chemicals, or biohazardous substances.

Exhaust hood: This is a type of ventilation equipment commonly found in commercial kitchens, assembly workshops, and similar locations. Such environments typically require only basic air circulation, so ventilation equipment does not need to have chemical safety protection features.

Safety Features:

Fume Hoods: All models come standard with a sliding glass viewing window (sash). This creates a physical barrier between operators and reactive chemicals, thus significantly reducing the risk of exposure.

Exhaust hood: It only has airflow function, is not equipped with a protective window, and does not have a negative pressure isolation design to prevent harmful substances from leaking into the room.

For any chemical laboratory, our fume hoods are an indispensable core piece of equipment.

Various types of chemical reactions generate volatile vapors, toxic dust, or corrosive gases. The main function of a fume hood is to capture these dangerous byproducts and prevent laboratory personnel from inhaling them.

Its working principle is very intuitive, that is to maintain a negative pressure state inside the fume hood. Airflow always flows from the laboratory to the cabinet opening, thus preventing pollutants from escaping and contaminating the entire laboratory space. Subsequently, the toxic gases will be completely expelled through the exhaust system.

Each fume hood we supply comes equipped with an adjustable glass window and an airflow monitoring panel. You can lower the viewing window to reduce contact with irritating chemicals, while the monitoring panel allows you to keep track of ventilation conditions at all times. Without this equipment, your chemical laboratory will not be able to meet workplace safety compliance standards.

Whether it's teaching or conducting experiments, our fume hoods must be used whenever hazardous chemicals are involved.

This regulation applies to the handling of virtually all volatile solvents or toxic solid powders, as well as to any experiment that releases irritating or toxic gases. Therefore, you must strictly follow this rule when conducting chemical experiments.

And this is not just for the protection of laboratory personnel. Because chemical fumes spread extremely quickly, using a fume hood can confine these hazardous gases inside the hood, thus ensuring the safety of everyone in the shift.

All of our fume hood designs are centered around reliable hazard control and user safety.

The sliding glass window serves not only as an opening for the operator to reach in and perform tasks, but also allows for the adjustment of the opening size by sliding it up or down; additionally, it blocks splashes and harmful fumes generated by chemical reactions, preventing operator exposure.

Controlled inward airflow is its absolute core working principle, without exception. Our fume hood maintains a stable negative pressure inside the cabinet, with air continuously flowing from the laboratory environment to the fume hood opening. All toxic vapors generated during the experiment are drawn directly into the exhaust pipe to ensure they do not leak into the laboratory air.

In addition, do not neglect routine checks and maintenance. To ensure the long-term safe operation of the fume hood, the airflow rate must be checked regularly, and the filter cartridges must be cleaned or replaced as scheduled. We can provide a complete maintenance checklist and guide for all models. If routine maintenance is neglected, the equipment will completely lose its ability to capture hazardous substances.

Based on my industry experience and the testing of our fume hood products, I can guarantee that the fume hoods we manufacture will operate reliably for 15 to 25 years under standard laboratory usage conditions.

Several key factors can significantly affect the lifespan of a fume hood. Among these factors, the quality of the raw materials used in manufacturing the product, the frequency of daily use, and whether maintenance is performed on time and as required play a decisive role. Therefore, please persist in daily cleaning and ｒｅｐｌａｃｅ consumables in a timely manner, which will help extend the life of the equipment.

In addition to what I just mentioned, daily operations are also crucial. Improper operation can accelerate the aging of the internal structure and cause premature failure of safety features. When the equipment has been in use for 15 years, we recommend that you arrange for technicians to conduct a comprehensive airflow and pollutant control performance test. If the ventilation efficiency is below safety standards, we can provide you with upgrade parts or a complete unit replacement solution.

Customers unfamiliar with cleanroom products often confuse these two types of equipment, but I want to tell you here: Although they are both ventilation equipment, their core protective functions are quite different, so they cannot be simply equated.

Fume hoods are designed to protect operators from chemical hazards. It can completely remove all toxic solvent vapors, corrosive fumes, and chemical particles generated during the experiment from the experimental area, this prevents harmful substances from circulating and spreading within the work area, thereby reducing risk.

The biosafety cabinets we provide are primarily intended for handling bacteria and viruses. It provides dual protection, safeguarding laboratory personnel while preventing cross-contamination of the biological samples inside. An internal HEPA filter captures airborne pathogens, preventing infectious agents from escaping the cabinet while maintaining the sterility of experimental cultures. Any procedure involving bacteria, viruses, or cell cultures requires the use of a biosafety cabinet rather than a standard fume hood.