C-12-102 - Radon Entry & Meas in Tropical Climates & Karst (CERTI-312 / NRPP 110)

This continuing education course deals with pressure driven entry of radon due to environmental factors found in structures constructed on karst or limestone formations as well as the effects of very tight buildings within tropical regions.
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This audio and video course provides you with an insight into the factors to be considered for the measurement of radon in tropical climates and areas in which karst formations may be prevalent.

There is approximately 12 hours of coursework, including audio, video, publications, and quizzes that are taken as you progress through the course (not timed and may be taken unlimited times).  There is no time limit for taking the course, and even after completion you continue to have access to the course in order to refer back to resources.

CERTI students also have access to business tools such as sample contracts, and warranties.  We are also available by phone during and after the course for any questions concerning the course or radon situations you come across on the job.

Note: your name, email address and an indication of passage of this course may be shared with national or state certification agencies for verification of completion.

This course includes:

  • Audio and video instruction
  • Downloadable Course Manual
  • Downloadable Resource Materials
  • Online Quizzes
  • Downloadable Course Certificate
  • 12 Category 1 CE Credits


  • Download/Streaming - No course materials will be shipped - everything you need is available to access and download online.


Friday, 03 March 2023
Ronald said: Enjoyed the class!
Leigh LaChine
Tuesday, 28 February 2023
Olivia said: Interesting material - great refresher
Friday, 10 February 2023
Tim said:
Mark Hatheway
Wednesday, 08 February 2023
Blake said:
Thursday, 26 January 2023
Brian said: OK
Emanuel Borja
Monday, 23 January 2023
Lauren said: Very informative
Jackelyn Goldschmidt
Tuesday, 17 January 2023
Bernard said: Course was very informative
Friday, 13 January 2023
John said: Unique and informative
Thursday, 05 January 2023
Keith said: Engaging content
Randall Glass
Wednesday, 06 January 2021
Aden said:
Benson Graybear
Monday, 18 May 2020
Bryson said: I recommend
Donald Beneteau
Sunday, 17 May 2020
Ryan said: I recommend this course
David Patton
Tuesday, 21 April 2020
Jim said: Informitive
Rob Johnston
Sunday, 23 February 2020
Sean said: Very interesting topic. Not totally topical for Mitigations in New York but the theoretical concepts can be applied for temp; pressure feilds,wind and rain. I have better understanding of radon as it reacts with structures in adverse coditions
Steven Reichert
Wednesday, 06 November 2019
Isaak said: very good
Irene Hughes
Saturday, 28 September 2019
Chris said: I recommend
Friday, 29 December 2017
Joseph said: I would recommend this
Joe Germilhac
Thursday, 26 October 2017
John said: Job well done!
Sean Patrick Murphy
Thursday, 26 October 2017
John said: Job well done!
Sean Patrick Murphy
Wednesday, 20 September 2017
John said: lots of good information about the effects of Karst on radon
Wednesday, 02 August 2017
George said: I found the course very informative and interesting.
Mark Vaughan
Tuesday, 30 May 2017
Alan said: Overall I enjoyed the course very much
Michael Jenkins
Wednesday, 10 May 2017
Dustin said: Over all a good course
David Galasso
Friday, 31 March 2017
Fred said: complete
Terry Sandmeier
Tuesday, 30 August 2016
Edward said: nice
Edward E Pelto
Tuesday, 14 June 2016
Thomas said: it expanded my knowledge of soils effect on radon levels
Thomas Thompson
Monday, 13 July 2015
Yuan said: This course is high quality and very valuable in practical experience, especially for persons depending on AC for daily life in tropic climates. My suggestion is to provide some data about the rate of incidence of lung cancer in Guam in the past year compared to other region of the world. This is to see how much the radon or RDP risk impact the health of the local residents
Yuan Yao
Monday, 26 January 2015
Jason said: Much of the same testing techniques are used in the states
Jason Trimberger
Tuesday, 06 January 2015
Steven said: I always enjoy my CERTI CEU courses.
Steven Nardozzi
Monday, 15 October 2012
Randy said: Good course. I personally know two of the guest presenters.
Monday, 23 August 2010
Tom said: Very well presented...important points were restated several times (good).
Thursday, 29 April 2010
Dale said: It was very interesting to see the differences between the US mainland and Guam.
Sunday, 17 January 2010
Douglas J. said: At first I wondered why Guam , but learned a great wealth of knowledge. Central Indiana has lots of limestone and now I understand more about Radon.