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Are Radon Testing Kits Accurate?

April 26, 2017accurate Kits radon testing

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Are Radon Testing Kits Accurate?

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EPA approved test kits, when used as directed, provide reliable indications of radon concentrations over the time the kits are used. Test kits that have successfully passed the EPA Radon Measurement Proficiency Program are marked ‘Meets EPA Requirements.’ Long term test kits (90 days to 1 year) are more representative. Proper test conditions are essential for good measurements. For short term tests, key elements are: 12 hrs. of closed house conditions before beginning the test, and for the duration of a short-term test; an absolute minimum of a 48 hr. test period; placing the test device in the lowest occupied level of the home; placing the device at least 12 inches off the ground, and two feet from the ceiling; and keeping the device away from any heat or humidity source.