The purpose of laminar air flow is the creation of a sterile and particle-free working environment through the continuous passage of air filtered by HEPA filter in a uni-directional manner above the work surface. Through the function of laminar air flow, air particles and any other contaminants are removed from the room air ensuring that any sensitive material placed in such a chamber... https://www.bionicsscientific.com/cleanroom-equipment/laminar-air-flow-cabinet.php