– the intergovernmental organization through which Member States act together
     on matters related to measurement science and measurement standards.
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Participation in the SIR

NMIs wishing to submit samples for evaluation should contact the BIPM in advance.
Attention must be paid to the procedure [RI-SIR-T-20] and a completed shipping form [ADM.DOU.F-12] must be sent in advance.

Results should be submitted using the SIR reporting form for liquid samples or for gas samples.

Related articles
Procedure to submit a sample to the SIR
Shipping form to be completed in advance
SIR reporting form for liquid samples
SIR reporting form for gas samples
Special issues:

Uncertainties in Radionuclide Metrology

Radionuclide Metrology