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Overview ISO 11665-4:2021 specifies an integrated measurement method for radon-222 (Rn-222) in air using passive sampling and delayed analysis. It is part of the ISO 11665 series on measuring radioac…
1 Scope This part of ISO 11665 describes radon-222 integrated measurement techniques with passive sampling. It gives indications for determining the average activity concentration of the radon-222 in…