# ISO 11665-9:2016 — Withdrawn and superseded ISO standards For ISO 11665-9:2016, item title is Measurement of radioactivity in the environment — Air: Radon-222 — Part 9: Test methods for exhalation rate of building materials; status code is 9599; successor is ISO 11665-9:2019; withdrawn / published date is 2016-02-03, recorded from its source on 2026-08-05. - **Identifier:** ISO 11665-9:2016 _(verified: appears in the quote below)_ - **Item title:** Measurement of radioactivity in the environment — Air: Radon-222 — Part 9: Test methods for exhalation rate of building materials _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 11665-9:2019 - **Withdrawn / published date:** 2016-02-03 _(verified: appears in the quote below)_ ## What the source says > 56653,IS,,ISO 11665-9:2016,Measurement of radioactivity in the environment — Air: Radon-222 — Part 9: Test methods for exhalation rate of building materials,Mesurage de la radioactivité dans l'environnement — Air: Radon 222 — Partie 9: Méthode de détermination du flux d'exhalation des matériaux de construction,2016-02-03,1,"['17.240','13.040.01']",ISO/TC 85/SC 2,9599,,[76013],"['en','fr']",38,

ISO 11665-9:2016 specifies a method for the determination of the free radon exhalation rate of a batch of mineral based building materials. The standard only refers to 222Rn exhalation determination using two test methods: Liquid Scintillation Counting (LSC) and gamma ray spectrometry (Annex A and An ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).