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sklademVydáno: 2019
ISO 11665-9:2019
ISO 11665-9:2019-Measurement of radioactivity in the environment — Air: Radon-222 — Part 9: Test methods for exhalation rate of building materials
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| Označení normy: | ISO 11665-9:2019 |
| Počet stran: | 39 |
| Vydání: | 2 |
| Vydáno: | 2019 |
Popis
ISO 11665-9:2019
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.