An Intercomparison of Standards of Mass and Mass Measurement Techniques at 50 g and 10 g, Between Four European National Standards Laboratories

An intercomparison of standards of mass of 50 g and 10 g was carried out between the national standards laboratories of four European countries during the period May 1988 to July 1989. The transfer standards used were carefully selected by the pilot laboratory (NPL) and the comparison scheme was chosen to minimise the influence of any instability in their mass. The results obtained show good agreement to within the uncertainties of measurement of the participants, the widest variation in mass value between any two participants being 8 μg at 50 g and 3 μg at 10 g.