[en] The results of an intercomparison exercise on a Pacific Ocean sediment sample, IAEA-367, designed for the determination of artificial and natural radionuclides levels, are reported. The data from 81 laboratories representing 37 countries have been evaluated. The following are the recommended values, with confidence intervals, for ⁶⁰Co, ⁹⁰Sr, ¹³⁷Cs, ^239+240Pu (Reference date: 1 January 1990). Information values for ¹⁵⁵Eu, ²³⁸Pu, ²⁴¹Am, and ²⁴¹Pu are reported. Information values for the following natural radionuclides ⁴⁰K, ²²⁶Ra, ²²⁸Th, ²³⁰Th, ²³⁴U, ²³⁵U and ²³⁸U are also reported. (author)