# ISO 13165-3:2016 — Withdrawn and superseded ISO standards For ISO 13165-3:2016, item title is Water quality — Radium-226 — Part 3: Test method using coprecipitation and gamma-spectrometry; status code is 9599; successor is ISO 13165-3:2024; withdrawn / published date is 2016-03-08, recorded from its source on 2026-08-05. - **Identifier:** ISO 13165-3:2016 _(verified: appears in the quote below)_ - **Item title:** Water quality — Radium-226 — Part 3: Test method using coprecipitation and gamma-spectrometry _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 13165-3:2024 - **Withdrawn / published date:** 2016-03-08 _(verified: appears in the quote below)_ ## What the source says > 60146,IS,,ISO 13165-3:2016,Water quality — Radium-226 — Part 3: Test method using coprecipitation and gamma-spectrometry,Qualité de l'eau — Radium 226 — Partie 3: Méthode d'essai par coprécipitation et spectrométrie gamma,2016-03-08,1,"['17.240','13.060.60']",ISO/TC 147/SC 3,9599,,[84238],"['en','fr']",14,"

ISO 13165-3:2016 specifies the determination of radium-226 (226Ra) activity concentration in all types of water by coprecipitation followed by gamma-spectrometry (see ISO 18589‑3).

The method described is suitable for determination of soluble 226Ra activity concentrations greater than 0,02 Bq l−1 using a sample volume of 1 l to 100 l of any water type.

For water samples smal ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).