99.60 Withdrawal effective Jul 26, 2023
CEN
CEN/TC 230 Water analysis
European Norm
13.060.60 Examination of physical properties of water | 13.280 Radiation protection | 17.240 Radiation measurements
ISO 13164-4:2015 describes a test method for the determination of radon-222 (222Rn) activity concentration in non-saline waters by extraction and liquid scintillation counting.
The radon-222 activity concentrations, which can be measured by this test method utilizing currently available instruments, are at least above 0,5 Bq l−1 for a 10 ml test sample and a measuring time of 1 h.
This test method can be used successfully with drinking water samples and it is the responsibility of the laboratory to ensure the validity of this test method for water samples of untested matrices.
Annex A gives indication on the necessary counting conditions to meet the required detection limits for drinking water monitoring.
WITHDRAWN
EN ISO 13164-4:2020
99.60
Withdrawal effective
Jul 26, 2023
PUBLISHED
EN ISO 13164-4:2023