The Davies-Gray Titration for the Assay of Uranium in Nuclear Materials. A Performance Study.

An interlaboratory comparison in two phases was organized to assess the precision and accuracy concerning the assay of uranium in nuclear materials by the potentiometric titration method. This contribution presents the results of this exercise in terms of method performance. Variations to be expected between different laboratories and within a single laboratory are estimated. In general, the method proved again very reliable.JRC.D-Institute for Reference Materials and Measurements (Geel