Stainless steel fume hood

The fume hood is an essential safety equipment in laboratories, primarily used for exhausting indoor waste gases. It is a commonly used laboratory device designed for expelling harmful gases and for cleaning and draining during the experimental process.
The main function of the fume hood: Primarily, the fume hood is designed for exhaust. In chemical laboratories, during experiments, harmful gases, odors, as well as flammable, explosive, and corrosive substances may be produced. To ensure the safety of users and prevent the spread of contaminants from experiments into the lab, fume hoods must 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 solely as an auxiliary function to the lab table.
The purpose of using a fume hood is to exhaust harmful gases produced during experiments, thereby 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 a mechanism to dilute harmful gases generated within the fume hood by absorbing external air from the absorption cabinet before releasing them outdoors.
Non-backflow function: The function should ensure that the air flow generated by the exhaust fan within the fume hood does not reverse and flow back into the room. To achieve this function, it is preferable to connect one fume hood to one exhaust fan with a single pipeline. For those that cannot be connected with a single pipeline, they should only be connected in the same room on the same floor. The ventilation fan should be installed as close to the end of the pipeline (or at the top of the floor) as possible.
Isolation Feature: A non-sliding glass viewport should be installed in front of the fume hood to separate the interior and exterior of the hood.
Supplementary Feature: Must have 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-resistant and acid-base corrosion-resistant features: Some fume hoods require the installation of electric furnaces, and some experiments generate a large amount of corrosive acidic and alkaline gases. The countertop, lining, side panels, and selected water nozzles and gas nozzles of the fume hood should all possess corrosion-resistant properties.