The American Association of Radon Scientists and Technologists (AARST) is a nonprofit, professional organization of members who are dedicated to the highest standard of excellence and ethical performance of radon measurement, radon mitigation and transfer of radon information for the benefit of members, consumers and the public at large.

The National Radon Proficiency Program (NRPP) is recognized as the nation’s leading certification program for radon professionals.


Corentium Pro is a favorite among home inspectors and other radon professionals. Fully AARST-NRPP certified for the North American market and beyond, this professional radon detector will be a reliable workhorse for decades.

The Corentium Pro is a Continuous Radon Monitor (CRM) providing hourly radon reads and is less susceptable to many kinds of test interference than other radon testing methods.

Another important feature of a CRM is the ability to download results and print reports immediately, no waiting for a laboratory to mail back radon test outcomes.


CRM's are a proven technology, both in the laboratory and in the field. There are other very acceptable Radon measurement systems, offering features and flexibility that allow for a comprehensive measurement strategy.

We will use this web location to introduce those measurement systems in the near future.



Great Midwestern Home Inspections possesses the training, certifications and equipment to effectively measure the radon levels in the home at the time of the test.

As a Residential Measurement Provider for Standard and Analytical Services, we have knowledge of U.S. EPA radon measurement protocols for the placement and retrieval of radon measurement devices, and we can properly interpret the results obtained in residential settings.

If Radon levels indicate action should be taken, a Radon Mitigation Specialist should be consulted to determine the likely ways Radon is entering the home and the steps needed to reduce Radon to a safer level.

We can assist homeowners in connecting with a Radon Mitigation Specialist.