Cleanroom Performance Testing


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A cleanroom is a controlled environment specifically designed to maintain very low concentrations of airborne particles using state of the art ventilation and filtration systems. Cleanrooms are commonly used in the medical, manufacturing, pharmaceutical, high tech, and semiconductor industries where it is critical to keep airborne particles to a minimum.

Cleanroom Performance Testing (CPT)

For over twenty years, NWESI has been a leader in providing cleanroom services for research facilities, data centers, fabs, and more. Cleanroom Performance Testing (CPT) is typically completed once construction of the space is finished or during periodic evaluations of existing facilities.

Cleanrooms must meet regulatory standards and can be certified at three different states of operation including As Built, At Rest, and Operational. In order to meet the highest levels of cleanliness, air quality, air pollutants, temperature, and humidity are monitored to maintain an environment conducive to the process requirements. CPT services encompass a wide array of tests, are determined by facility managers, and may include:

  • Particle Counts
  • Filter Airflow Uniformity
  • Room Pressurization
  • Temperature and Humidity Measurements
  • Air Change Rates
  • Filter Scanning
  • Certification Process

NWESI performs NEBB Certified Cleanroom Performance Testing in accordance to client selected specifications and tests. Depending on the requirements of the cleanroom, this can be performed from the latest version of the ISO Standard 14644 or to Federal Standard 209E. CPT is the only way to know if your cleanroom is operating as intended. 

Meet our Cleanroom Performance Testing lead. Eric is certified in CPT procedures and handles all of our clients’ cleanroom needs.

“NorthWest Engineering does very critical work for us when they do our annual Cleanroom Performance Testing. There is no question about the integrity of work they do.”

Kelly ConnorsQuality Assurance Manager, Dravon Medical Inc.