Where can I find radon testing equipment for granite countertops? And what are safe levels?

Asked by Lorraine
Windsor, CA

As seen on Dr. Ozz, granite can have toxic levels of radon.


Bill Bradbury

Answered by Bill Bradbury

Smithfield, UT

Envirocon Home Restoration

June 1, 2010

Radon is not dangerous, but its decay daughters are. These can be tested for with those little kits they sell at the home improvement stores.

Just leave it out, open to the air in the room, for at least 2 days and send it back to the lab. Radiation levels of 4 pCi/L (picocuries per liter) and above are considered hazardous to health.


For more information:

To learn more about home radon testing, you should read David Edwards's Ask A Pro Q&A, "Are engineered stone (quartz) countertops really green?"

The EPA's A Citizen's Guide to Radon also offers helpful tips on testing your home for radon.

Tagged In: home air quality, stone

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