Fume Hoods/ASHRAE Testing Services

TSS offers comprehensive testing, certification and maintenance of fume hoods. Our skilled technicians are authorized to perform warranty repairs for all major equipment manufacturers. All testing is performed in accordance with established TSS standard operation procedures [SOPs], which are updated to remain compliant with federal and international safety guidelines, current good manufacturing practices [cGMPs] and quality assurance systems.

Fume Hoods [FHs] are tested in accordance with OSHA, AIHA/ ANSI, SEFA and ASHRAE.

Primary tests performed include:

• Inflow velocity profiling - assures that a safe inflow is maintained to protect the operator from the product
• Airflow smoke testing - provides a qualitative demonstration of capture at the face of the unit, in order to protect the worker from possible exposure

Optional tests include:

• Calibration of airflow monitors - Testing of airflow monitors
• ANSI/ ASHRAE 110 testing - provides quantitative data used to evaluate the containment performance of fume hoods. Testing includes:
  • Primary testing noted above
  • Local and large volume smoke visualization testing - determines the optimal fume hood sash positions and acceptable capture performance for the unit, from both inside and outside of the unit
  • Cross-draft testing - measures the amount of horizontal and vertical cross-current activity at the face of the unit
  • VAV (variable air-volume) testing - determines the optimal fume hood sash positions and acceptable stabilization time for the unit.
  • Tracer gas containment testing - verifies containments and reentrainment of the unit by simulating a controlled chemical release inside the fume hood, and monitoring outside the hood with an IR spectrophotometer