EFLAB Laminar Air Flow (LAF) cabinet instruments ensure an extremely clean environment for product & material/sample protection against airborne dust, particle or microorganisms. EFLAB Vertical LAF cabinets work under air filtration, recirculation and indoor exhausting principle. Room air passes through pre-filters that block coarse particles at device top and reaches to work cabinet area with an air velocity of 0.40 m/s (± %5) by passing through HEPA filter. Built-in laminator in the fan filter module supplies the airflow in a homogenous and laminated way. Designs of working cabinet and air diffusion assure trimmed airflow and sweeping dead zones. Air moves in from two ways into the work chamber, one part is exhausted to the room at the front by preventing room air movements into the work zone. The rest of the internal air is recirculated from the back holes of the cabinet which increases the HEPA filter life.