BSC Testing and Certification

TSS offers comprehensive testing, certification and maintenance of biological safety cabinets. Our skilled technicians are authorized to perform warranty repairs for all major equipment manufacturers. All testing is performed in accordance with established TSS SOPs, which are updated to remain compliant with federal and international safety guidelines, current good manufacturing practices [cGMPs], and our own ISO 9001 certified quality system.


Biological safety cabinets [BSCs] are certified to meet NSF/ANSI 49, OSHA, NIH/CDC, and the manufacturer's specifications.

Primary tests performed include:

  • Inflow velocity measurements - assures that a safe inflow is maintained to protect the operator from the product, as well as the product from outside contamination
  • Downflow velocity measurements - documents that the air in the work area is unidirectional and functioning as designed, preventing cross contamination
  • HEPA filter integrity testing - tests filters and the system for leakage or defects
  • Fluorescent and UV light testing - assures fluorescent lighting levels are sufficient to prevent operator fatigue and UV lighting operates adequately
  • Airflow visualization testing - qualitatively verifies airflow direction using a source of visible fog
  • Site installation testing and alarm calibration - assesses appropriate procedures for the installation of units for NSF and OSHA compliance

Optional tests include:

  • Non-viable particle counting
  • Electrical safety testing - assures that the unit is electrically grounded and safe for worker use
  • Pressure decay and cabinet integrity testing - establishes that there is no contamination escaping through the welds and joints
  • Vibration testing - assures that product is not subject to damage due to vibration
  • Sound testing - verifies that using the hood will not contribute to worker fatigue

The routine certification of your biosafety cabinet is vital to the safety of your laboratory technicians and the validity of your research. TSS maintains the largest and most experienced staff of NSF Accredited service technicians in the United States.


One call puts you in touch with the TSS regional office nearest you. Contact us online or call 800.877.7742 to schedule services.

With every service call, TSS offers you

  • responsive service to minimize downtime
  • customized documentation and technical writing services
  • online access to your equipment inventory and certification
  • the assurance of an ISO 9001 certified quality system
Download BSC testing service information

Download BSC Certification Information

Schedule service today

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