Clean Bench Certification and Maintenance
TSS offers comprehensive testing, certification and maintenance of unidirectional flow devices (also known as laminar flow hoods or clean benches). Our skilled technicians are authorized to perform warranty repairs for all major equipment manufacturers. All unidirectional flow device testing is performed in accordance with established TSS SOPs, which we update to remain compliant with applicable local, federal and international certification requirements, current good manufacturing practices [cGMPs], and our own ISO 9001-certified quality system.
Clean bench testing and certification is performed in accordance with applicable guidelines from IEST, ISO, and manufacturers' specifications.
Primary tests include:
- HEPA filter integrity testing - documents leakage or defects and demonstrates that no contamination will enter the work area through the supply filter
- Airflow velocity profile – documents airflow uniformity and demonstrates that the unit is operating at a sufficient velocity
- Airflow smoke pattern testing – airflow patterns are observed using a neutrally buoyant visible medium to verify unidirectional airflow and to ensure lower quality air does not enter the unit
Optional tests include:
- Non-viable particle counting – performed in accordance with ISO 14644-1 or EU Annex 1 and reports the amount of particulate, if any, within the work zone
- Light testing – ensures fluorescent lighting levels are sufficient to prevent operator fatigue and ensures UV lighting is operating adequately
- Vibration testing – ensures product is not subject to damage due to vibration
- Sound testing – verifies hood operation/usage will not contribute to worker fatigue
Make TSS your first call for all your controlled environment needs. We specialize in clean bench testing and certification as well as biosafety cabinet testing and certification. Contact us at 800-877-7742, or directly at our nearest REGIONAL OFFICE, to discuss your specific needs and to schedule service.
