![]() Researchers and technicians working in your laboratory must understand how a laminar flow hood functions and how to use it properly. Ensure that your workers have all the space they need to carry out their work. If you don't have enough laminar flow hoods in your laboratory, or if the hoods you do have aren't big enough, the work areas inside the hoods can become cluttered with scientific equipment, such as beakers, pipettes and flasks. Therefore, it's very important to keep the work area tidy and free from clutter. If too many objects are placed in the work area, they disrupt air flow, preventing the hood from effectively circulating and cleaning the air. ![]() Laminar flow hoods only prevent contamination if you use them correctly. Vertical exhaust hoods reduce the risk of workers breathing in harmful vapors, helping to keep the laboratory a safe place to work. This air flows through gaps in the bottom and back of the cabinet and is circulated back to the filter, where particles are removed. ![]() In a vertical laminar flow hood, the HEPA filter is located above the bench and blows filtered air down onto the work area. Vertical laminar flow hoods are more costly than horizontal flow hoods, but they're essential when working with hazardous materials, such as radioactive substances or chemicals that produce toxic gases. Horizontal Laminar Flow Hoods Vertical Laminar Flow Hoods There are two main types of laminar flow hoods: horizontal flow and vertical flow. The filtered air is circulated around the unit under high pressure to keep dust away from the experimental area. Flow hoods contain a high-efficiency particulate air (HEPA) filter that removes 99.7 percent of particles as small as 0.3 microns from the air. What Is a Laminar Flow Hood?Ī laminar flow hood is a device that circulates and filters air inside a partially enclosed work area to protect both the workers and the samples they are working with from contamination. Educate yourself about the features of laminar flow hoods so you can choose the right equipment for your laboratory or cleanroom. Choosing the right type of laminar flow hood allows scientific researchers to work safely and effectively in the laboratory. HEPA Filter Services Inc will provide complete certification of Laminar Flow Hoods including a full certification report and certification sticker affixed to the cabinet.Īll Laminar Flow Hoods we certify are tested in accordance with IEST-RP-CC-002-3 standards.Laminar flow hoods are essential equipment when working with delicate or hazardous materials, such as biological cells or unstable chemicals. Back streaming tests to ensure that non filtered air is not getting into the sterile work zone.Air flow readings across the work plane to ensure laminar flow.Testing is performed when the Laminar Flow Hood is initially installed, annually and when the cabinet is relocated. Testing of these cabinets is performed in accordance with IEST-RP-CC-002-3. They are not to be confused with Biological Safety Cabinets in that they deliver air across the work area and out into the room. Laminar Flow Hoods provide a sterile working environment for product protection. Sometimes referred to as a Clean Bench, Laminar Flow Hoods are designed to provide uniformed air velocity along parallel flows lines within a controlled work space.
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