TSI provides fume hood testing and certification for laboratory fume hoods, laminar flow hoods and tables including providing Velocity, Visualization and Tracer Gas Testing for constant or variable volume fume hoods.  TSI also provides HEPA filter leak testing for laboratory fume hoods and fume hood exhaust.  TSI provides testing and certification services in accordance with the American Society of Heating Refrigerating and Air Conditioning Engineers (ASHRAE) Standard 110, Method of Testing Performance of Laboratory Fume Hoods or BSR/ASHRAE Standard 110P and the American National Standards Institute (ANSI) Standard Z9.5, Laboratory Ventilation.  TSI can perform all levels of testing required for your fume hood performance certification.