# ISO 9696:1992 — Withdrawn and superseded ISO standards For ISO 9696:1992, item title is Water quality — Measurement of gross alpha activity in non-saline water — Thick source method; status code is 9599; successor is ISO 9696:2007; withdrawn / published date is 1992-11-25, recorded from its source on 2026-08-05. - **Identifier:** ISO 9696:1992 _(verified: appears in the quote below)_ - **Item title:** Water quality — Measurement of gross alpha activity in non-saline water — Thick source method _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 9696:2007 - **Withdrawn / published date:** 1992-11-25 _(verified: appears in the quote below)_ ## What the source says > 17552,IS,,ISO 9696:1992,Water quality — Measurement of gross alpha activity in non-saline water — Thick source method,Qualité de l'eau — Mesurage de l'activité alpha globale dans l'eau non saline — Méthode par source concentrée,1992-11-25,1,"['13.060.60','13.280']",ISO/TC 147,9599,,[42755],"['en','fr']",11,"
The method is based on acidifying the sample to stabilize it, evaporation almost to dryness, conversion to the sulfate form and ignition at 350 °C, transfer of a portion of the residue to a planchette and counting alpha-activity in a alpha-particle detector. Covers non-volatile (at 350 °C) alpha-active radionuclides and can be extended to saline or mineralized waters, but with a reduce ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).