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What is BS EN14175?

BS EN 14175 is a British Standard related to the safety and performance requirements of Fume cupboards. It is part of the European standard series EN 14175, which specifies safety and performance requirements for fume cupboards used in laboratories. The standard outlines essential criteria for the design, construction, and testing of fume cupboards, which are essential laboratory equipment used to contain and exhaust hazardous fumes, vapours, or dusts generated during various laboratory processes. BS EN 14175 covers aspects such as ventilation, airflows, containment efficiency, noise levels, electrical safety, construction materials, and ergonomics. Compliance with this standard helps ensure that fume cupboards are safe and effective in protecting laboratory personnel and maintaining a controlled environment during experiments and processes that involve potentially harmful substances. It is essential for manufacturers, laboratory owners, and operators to adhere to the requirements specified in BS EN 14175 when designing, installing, and using fume cupboards to ensure the health and safety of laboratory workers and the surrounding environment.


Discharge Stack Height Regulations

When ductwork discharges air or pollutants from a building into the surrounding environment, its height above the building and other structures can impact the airflow pattern and the diffusion of emissions. BS EN 14175 states that duct discharge stacks must extend to 3 Metres above the highest point of the building or 1.25X the total height (whichever is greatest). If stack discharge heights are not sufficient enough, this will mean gases and vapours may enter back into adjacent windows. Increasing the height of the duct above the building can promote better dispersion of exhaust emissions into the atmosphere. Higher elevation allows the pollutants to mix with a larger volume of air, reducing their concentration in localised areas. This is particularly important for exhaust systems that release harmful gases or pollutants. Some circumstances may dictate a shorter discharge duct if the area is an urbanised neighbourhood or there are adjacent buildings that may be affected by the release of fumes. Our industrial team of fan experts will work with you to determine the right fume extraction fan for your corrosive air application. Talk to one of the team by emailing [email protected] or start a chat on our website with one of our technical team.