Radon levels in a home change significantly over time and can rise or decrease from one hour or day to the next.
For this reason, radon measurements taken over a longer period of time are more accurate in regards to radon testing. Health Canada recommends homeowners conduct a long-term radon test for a minimum of three months, during the fall or winter and that the detector is placed in the lowest level of a home or commercial building.
Radon removal is the process used to reduce radon gas in breathing zones of occupied buildings, or to remove radon from water supplies.
Radon is an invisible radioactive gas that can affect the health of your family.
Reducing the amount of radon in your home is easy and the techniques used by certified radon specialists to lower radon levels are effective and can save lives.
A three-month radon test indicates the annual average radon exposure and should be used to determine if a building’s radon concentration exceeds the Canadian guideline level of 200 Bq/m³. Radon test kits can be purchased by phone, online, in-person from certain certified professionals, local community health organizations or home improvement retailers.
Ensuring safe removal of the asbestos-containing materials prior to beginning a project.
This radon testing device contains a disk called an “electret,” which possesses an electrostatic charge housed in a container. When the electret ion chamber detector is exposed to the air in a home for a specified time, the radon enters the container and the ionization produced by decay reduces the electret charge.
The difference in the charge from the beginning of testing to the end of the testing period is measured by a specialized voltmeter, and the average radon concentration is calculated. This can be done in the home or commercial building in which the radon is being detected, or the detector can be returned to a laboratory for measurement.
Alpha track detectors use a small piece of special plastic enclosed in a container. This detector is exposed to the air in a home for a specified time.
When the radon in the air enters the chamber of the detector, the alpha particles produced leave marks on the plastic. At the end of testing the detector is returned to a laboratory for analysis, and an average radon concentration is then calculated.
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