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ISO/FDIS 13169

Water quality — Uranium — Test method using alpha liquid scintillation counting

General information

50.20     Oct 2, 2026

ISO

ISO/TC 147/SC 3

International Standard

13.060.60     17.240  

Scope

This document specifies the measurement method for the determination of total activity concentration of uranium isotopes in non-saline waters by extraction and liquid scintillation counting.
This method covers the measurement of soluble uranium isotopes in water in activity concentrations between approximately 2·10−3 Bq/kg and 10 Bq/kg when analysing a 1 l test sample volume with a 60 000 s counting time with a typical alpha LSC instrument.
The ratio 234U/238U can also be determined. This method has not been tested for the measurement of other uranium isotopes.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 13169:2018

NOW

PROJECT
ISO/FDIS 13169
50.20 Proof sent to secretariat or FDIS ballot initiated: 8 weeks
Oct 2, 2026

National adoptions

dnaSRPS EN ISO 13169:2025  
ISS

Water quality - Uranium - Test method using alpha liquid scintillation counting (ISO/FDIS 13169:2026)

50.20   Proof sent to secretariat or FDIS ballot initiated: 8 weeks

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