Measurement of radioactivity in the environment - Air: Radon-222 - Part 9: Test methods for exhalation rate of building materials
This document specifies a method for the determination of the free radon exhalation rate of a batch of mineral based building materials. This document only refers to 222Rn exhalation determination using two test methods: liquid Scintillation Counting (LSC) and gamma ray spectrometry (see Annex A and Annex B).
The exhalation of thoron (220Rn) does not affect the test result when applying the determination methods described in this document.
| SDO | ISO: International Organization for Standardization |
| Document Number | ISO 11665 |
| Publication Date | Not Available |
| Language | en - English |
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| Supercedes | |
| Committee | ISO/TC 85/SC 2 |
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