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projektai-lsd Lithuanian Standards Board
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prEN ISO 13169

Water quality - Uranium - Test method using alpha liquid scintillation counting (ISO/DIS 13169:2025)

Draft Public enquiry
Comment end date 2026-02-10
Export comments Read draft and comment

Project stage codes

1. Prioritetinių darbo temų pažymėjimas ir ekspertų skyrimas
2. Projektas
3. Viešoji apklausa
From 2025-12-12 till 2026-02-10
4. Closure of enquiry
5. Submission to Formal Vote

Organisation

CEN Europos standartizacijos komitetas

ICS

17.240 - Radiation measurements

Technical Committee

TK 36 Environmental protection

ForeignTC'S

CEN/TC 230

Number of comments

0

Comment start date

2025-12-12

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.