Gilligan, C R D; Harms, A V (2012) Environmental radioactivity proficiency test exercise 2011. NPL Report. IR 27

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Abstract

The results of the seventeenth NPL Environmental Radioactivity Proficiency Test Exercise are reported. This exercise, now UKAS accredited, included preparing 215 samples and distributing them to 63 participants. Seven different sample types were offered: an aqueous mixture of five alpha emitters (AL), an aqueous mixture of five alpha emitters (AH), an aqueous mixture of four beta emitters (B1), an aqueous mixture of four beta emitters (B2), an aqueous mixture of mixed gamma emitters at two concentration levels (GL and GH) and a synthetic solid sample containing six radionuclides (S). The level of performance was better than observed in the previous Exercise (2010); 80 % of the results returned were in agreement with the assigned values.

Item Type:	Report/Guide (NPL Report)
NPL Report No.:	IR 27
Subjects:	Ionising Radiation Ionising Radiation > Radioactivity
Last Modified:	02 Feb 2018 13:14
URI:	http://eprintspublications.npl.co.uk/id/eprint/5551

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