Historical
ISO 13165-1:2013
Water quality - Radium-226 - Part 1: Test method using liquid scintillation counting
ISO 13165-1:2013 specifies the determination of radium-226 (226Ra) activity concentration in non-saline water samples by extraction of its daughter radon-222 (222Rn) and its measurement using liquid scintillation counting.
Radium-226 activity concentrations which can be measured by this test method utilizing currently available liquid scintillation counters goes down to 50 mBq l−1. This method is not applicable to the measurement of other radium isotopes.
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International Organization for Standardization [iso]
International Organization for Standardization [iso]