Entry Level Courses

RMO New 300 x 287Entry Level Measurement

C-101 - Radon & Radon Decay Product Measurement Course (CERTI-3000)

(Previously CERTI-1)

Entry Level course which includes training required for becoming certified in radon measurement.  This popular online course was recently updated (May 2021) to include video of a classroom session.  It still includes many extras including business resources and online quiz questions designed to help you prepare for the national certification exam.  Students also have access to the audio version of the course.




 NOTICE - As of April 23, 2021 this course has been updated
to reflect changes in new NRPP Exam.

Read Full Notice

RTM collage bEntry Level Mitigation

C-102 - Radon Mitigation Technology (CERTI-4000)

(Previously CERTI-2)

Entry level course to become certified in Radon Mitigation in the United States. The instruction is audio based, with online course manual, resources and quizzes to reinforce the material. It also includes a field mentoring program tailored to your experience level.

 *Measurement course is a pre-requisite to this course, if you have not previously completed an approved Measurement Course you can purchase both courses together at a discount.  At checkout enter coupon code "bundle" to receive a discounted price of $695 for both courses.

   NOTICE - As of April 23, 2021 this course has been updated to reflect changes in new NRPP Exam. 

Read Full Notice

  • National Radon Proficiency Program (NRPP) -
    ALL CERTI courses have been approved after arduous development and review.  Because of this, state programs also accept our courses (the only exceptions are where state protocols differ from the national protocols or a preference for classroom only courses - to confirm your state accepts the course, see the state listing above).
  • National Radon Safety Board (NRSB) -
    Entry Level Courses - C-101 - Radon and Radon Decay Product Measurement Course (CERTI-3000) and C-102 - Radon Mitigation Technology (CERTI-4000) are approved by NRSB.