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ISO/FDIS 13169

Water quality — Uranium — Test method using alpha liquid scintillation counting ISO/FDIS 13169

General information

50.00   Final text received or FDIS registered for formal approval   Jul 2, 2026

ISO

ISO/TC 147/SC 3 Radioactivity measurements

International Standard

13.060.60   Examination of physical properties of water | 17.240   Radiation measurements

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

IN_DEVELOPMENT
ISO/FDIS 13169
50.00 Final text received or FDIS registered for formal approval
Jul 2, 2026




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