ISO 13168:2015 PDF

Scope: This International Standard describes a test method for the simultaneous measurement of tritium and carbon-14 in water samples by liquid scintillation counting of a source obtained by mixing the water sample with a hydrophilic scintillation cocktail. This is considered a screening method because of the potential presence of interfering nuclides in the test sample. The method can be used for any type of environmental study or monitoring. This International Standard is applicable to all types of waters having an activity concentration ranging from 5 Bq/l to 106 Bq/l (upper limit of the liquid scintillation counters for direct counting). For higher activity concentrations, the sample can be diluted to obtain a test sample within this range.

ISO 13168:2015 Referenced Document

ISO 11929:2010 Determination of the characteristic limits (decision threshold, detection limit and limits of the confidence interval) for measurements of ionizing radiation - Fundamentals and application
ISO 5667-14:2014 Water quality - Sampling - Part 14: Guidance on quality assurance and quality control of environmental water sampling and handling
ISO 5667-1:2006 Water quality - Sampling - Part 1: Guidance on the design of sampling programmes and sampling techniques
ISO 5667-3:2012 Water quality - Sampling - Part 3: Preservation and handling of water samples
ISO 80000-10:2009 Quantities and units - Part 10: Atomic and nuclear physics
ISO 8258:1991 Shewhart control charts
ISO 9698:2010 Water quality - Determination of tritium activity concentration - Liquid scintillation counting method
ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories
ISO/IEC Guide 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)
ISO/IEC Guide 99:2007 International vocabulary of metrology - Basic and general concepts and associated terms (VIM)

2023 ISO 13168:2023 Water quality
2016 ISO 13168:2015/Amd 1:2016 Water quality — Simultaneous determination of tritium and carbon 14 activities — Test method using liquid scintillation counting
2015 ISO 13168:2015 Water quality - Simultaneous determination of tritium and carbon 14 activities - Test method using liquid scintillation counting