NWESI has provided performance testing of cleanrooms since 1985 and done so with unbiased professionalism. Our value-added expertise ensures the best performance possible for your facility.

We can test and certify a cleanroom to either Federal Standard 209E or International Standard Organization (ISO) 14644-1 requirements. We have the instrumentation and experienced personnel to certify everything from a Class 1 cleanroom at 0.1 micrometers to a Class 100,000 cleanroom at 5.0 micrometers.

As a certified member of the National Environmental Balancing Bureau (NEBB) and a member of the Institute of Environmental Science and Technology (IEST), we have worked throughout the Northwest and the world. We can help you get your facility certified, providing professional service and long-term solutions to any problem we come across.