National Physical Laboratory

NPL Environmental Radioactivity Proficiency Test Exercises

These exercises started in 1989, with the increase in public concern about radioactivity in the environment, particularly after the Chernobyl accident. The aim was to assess the performance of the radioactivity measurement community in the UK. More recently, participation in the exercises has become an important aspect of UKAS accreditation in this field. The exercises are now run on an annual basis by NPL.

The samples are dispatched to the participants, who are given approximately four months to analyse the samples and submit the results to NPL.

The Environmental Radioactivity Proficiency Test Exercise 2016 is almost complete. The final report will be issued in July. We apologise for the delay.

The Environmental Radioactivity Proficiency Test Exercise 2017 is about to begin. Further details will be available in July.

The following links provide information on previous exercises:


For further information, please e-mail radioactivity@npl.co.uk
Tel: 020 8943 8600
Fax: 020 8943 8700

Last Updated: 26 Jun 2017
Created: 23 May 2011

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