PP Exhaust Cabinet

Laboratory fume hoods are essential safety equipment, primarily used for exhausting indoor waste gases. They are commonly employed in laboratories to expel harmful gases and facilitate cleaning and waste disposal during experiments.
The main function of a fume hood: The primary function of a fume hood is exhaust. In a chemical laboratory, during experiments, harmful gases, odors, as well as flammable, explosive, and corrosive substances may be produced. To ensure user safety and prevent the spread of contaminants from experiments, a fume hood should be used near the source of pollution. Previously, fume hoods were used sparingly, only in experiments involving harmful and dangerous gases or those generating large amounts of heat. The fume hood served only as an auxiliary function to the experimental table.
The purpose of using a fume hood is to exhaust harmful gases produced during experiments, protecting the health of the experimenters. This means that the fume hood must have high safety and operability, which requires it to possess the following functions:
Release Function: The system should be equipped with an institution that dilutes harmful gases generated inside the fume hood by absorbing external air from the absorption cabinet before discharging them outdoors.
Non-backflow function: The cabinet should have the function of preventing the airflow generated by the exhaust fan inside the fume hood from reversing and flowing back into the room. To achieve this function, it is preferable to connect a fume hood with an exhaust fan using a single pipe. For those that cannot be connected with a single pipe, they should only be connected within the same room on the same floor. The ventilation fan should be installed as close to the end of the pipe (or at the top of the floor) as possible.
Isolation Feature: A non-sliding glass window should be installed in front of the ventilation cabinet to separate the interior and exterior of the cabinet.
Supplementary Feature: Should be equipped with a channel or alternative device to draw in air from outside the fume hood when releasing harmful gases.
Airflow control function: An intake speed is required to prevent harmful gases from escaping.
Heat and corrosion resistance: Some fume hoods require the installation of electric furnaces, and some experiments produce a large amount of corrosive acidic and alkaline gases. The countertops, back panels, side panels, and selected water nozzles, gas nozzles, etc., of the fume hood should all have corrosion resistance.