ISO 13165-2:2022
ISO 13165-2:2022



This document specifies a test method to determine radium-226 (226Ra) activity concentration in all types of water by emanometry.

The test method specified is suitable for the determination of the soluble, suspended and total 226Ra activity concentration in all types of water with soluble 226Ra activity concentrations greater than 0,02 Bq l−1.

The decay chains of 238U and 232Th are given in Annex A. Figure A.1 shows the 238U and its decay chain.

General information 

  •  :  Published
     : 2022-09
  •  : 2
     : 16
  •  : ISO/TC 147/SC 3 Radioactivity measurements
  •  :
    17.240 Radiation measurements
    13.060.60 Examination of physical properties of water

Buy this standard

Format Language
std 1 92 PDF + ePub
std 2 92 Paper
  • CHF92

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)

Keep up to date with ISO

Sign up to our newsletter for the latest news, views and product information.