Additional data for the deliverable "D6: Inter-laboratory comparison report, describing sample preparation requirements, sample introduction methods, and uncertainty budgets"

This dataset describes the results of two interlaboratory comparisons using two reference materials (RM), a spiked natural seawater and a spiked synthetic sand. The measurands selected were the mass fraction of 238U, 239Pu, 241Am and 237Np, and the 234/238U, 235/238U, 236/238U and 239/240Pu isotope ratios. The liquid comparison involved 11 participants, who produced a total of 83 results. The solid comparison involved 11 participants who produced a total of 79 results. This dataset presents the assigned values for each measurand, the results of the participants and their analysis following statistical criteria.