RadNet operators ship air filters or cartridges to EPA’s National Analytical Radiation Environmental Laboratory (NAREL) for analysis. All air filters go through an initial screening for beta radiation. Extremely low readings, which fall below a conservative threshold, are posted to the Envirofacts RadNet web page. Any filter that exceeds the threshold goes through additional analysis to determine the exact type and amount of radioactive material present on the sample.
How does EPA analyze air filters?
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