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Full-Service Cleanroom and Laboratory Certification Company

Cleanroom Testing and Certification

We test and certify cleanrooms to verify that your facilities are being operated and maintained in the standard set forth by the regulatory standards: ISO cGMP, CNBT, FDA, IEST, or your SOP.


Standard Test

  • Airflow Volume/ Velocity
  • Room Pressurization
  • Non- Viable Particulate Sampling
  • Hepa Filter Leak Test


Optional Services

  • Temperature / Humidity % 
  • Mag Gauge Calibration and Installation
  • Light and Sound Testing
  • Compressed Air and Gas testing
  • Hepa Filter Replacement
  • Cleaning and Maintenance


Biological Safety Cabinet Certification

We perform certification and maintenance for your BSCs on an Annual or Semi-Annual schedule. Certifications are performed to NSF/ANSI-49, and manufacturers specifications. Same day reports for all biological safety cabinets.


  • Downflow Velocity
  • Inflow Velocity
  • Hepa Filter Integrity Test
  • Airflow Visualization
  • Sound Test
  • Light Test


  • Chlorine Dioxide Decontamination
  • Safety Cabinet Move and Setup
  • Motor and Filter Changes
  • Sash Repair
  • Old Unit Disposal

Fume Hood Testing

We certify and repair Fume Hoods. Our test is performed to ASHRAE standards. We repair all aspects of fume hoods from missing parts to broken sash we can get the unit up and going for you. We even replace belts and direct drive units on the rooftop exhaust fans.


  • Face Velocity Test
  • Smoke visualization test
  • Cross draft flow test
  • Smoke test
  • Low airflow diagnostics

USP 797 Testing

We test sterile compounding pharmacies to USP standards. Our technicians are CNBT certified for sterile compounding facilities. 


  • Microbial Testing 
  • Non-Viable Particulate Sampling
  • Airflow/ Pressure test
  • HEPA Integrity Test
  • Biological Safety Cabinet
  • Isolator Test
  • Laminar flow workstation certification


  • Routine Cleaning and Maintenance


Some Additional Services We Offer

Please reach us at circlecitycleanroom@gmail.com if you have a need that is not listed, we will more than happy to help.


Cleanroom Design

Cleanroom Contruction

Epoxy Flooring

Welded Seam Flooring

Drywall Work

Equipment moves and Set-up

Fan Filter Unit Replacement

Airflow Test and Balance

BSL 3 Certification


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