Skip to main content
EU Science Hub
General publications


Uranium isotope amount ratios in uranium particles


Publication date
17 January 2013


Uranium isotope amount ratios in uranium particles

NUSIMEP-7 is an interlaboratory comparison for all laboratories involved in uranium particle analysis. Particularly, also for the IAEA network of analytical laboratories for environmental sampling (NWAL). Participating laboratories in NUSIMEP-7 receive two test samples of uranium particles on a graphite planchet with undisclosed isotope amount ratio values n(234U)/n(238U), n(235U)/n(238U) and n(236U)/n(238U).
The participants’ measurement results will be evaluated against the certified reference values. Full confidentiality is guaranteed with respect to the link between measurement results and the participants’ identity. The participation fee is € 200, including dispatch. Due to the nature of this comparison only a limited number of samples are available. Samples will be allocated to participants in order of registration until the stock of NUSIMEP-7 samples is exhausted. Please register electronically for this inter-laboratory comparison using the following link: For more information please contact:
Reporting of results:24 September 2011
Reporting to participants:May 2012
Sample dispatch:End of April 2011
Year:2013-01-01 00:00:00


eur_25179_en _nusimep_7_report_to_participants.pdf
(2.55 MB - PDF)