Approved Work Item
ISO/AWI 11665-9
Measurement of radioactivity in the environment — Air: Radon-222 — Part 9: Test methods for exhalation rate of building materials
Reference number
ISO/AWI 11665-9
Edition 3
© ISO 2025
Approved Work Item
Under development
A working group has prepared a draft.
Will replace ISO 11665-9:2019

Abstract

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.

General information

  • Status
     : Under development
    Stage
    : New project registered in TC/SC work programme [20.00]
  • Edition
     : 3
  • Technical Committee :
    ISO/TC 85/SC 2
  • RSS updates

Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goals

7
Affordable and Clean Energy
9
Industry, Innovation and Infrastructure
13
Climate Action

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