Powders, or precursors of powders, for the fabrication of Solid Oxide Fuel Cell (SOFC) anode-, cathode-, electrolyte- and ceramic interconnect structures are the relevant products to be evaluated. The aim is to provide a standard set of powder properties which have to be measured according to recommended methods and measurement conditions. The set is based on the results of a round robin test for electrolyte powder between five laboratories. The selected powder properties to be measured are chemical composition, phase composition, specific surface, particle size distribution, particle shape, sinterability, powder density, and flowability. The laboratories involved are Cookson Group (United Kingdom), Eniricerche (Italy), Senter for Industriforskning (Norway), Alusuisse/Lonza (Switzerland), and the Netherlands Energy Research Foundation. 2 app., 8 refs.