This European Standard provides the methodology for measuring and characterizing the dustiness of a bulk material that contains or releases nano-objects or submicrometer particles. In addition, it specifies the environmental conditions, the sample handling procedure and the method of calculating and presenting the results. Guidance is given on the choice of method to be used. The methodology described in this European Standard enables a) the quantification of dustiness in terms of health-related index mass fractions, b) the quantification of dustiness in terms of an index number and an emission rate, and c) the characterization of the aerosol from its particle size distribution and the morphology and chemical composition of its particles. This European Standard is applicable to all bulk materials, including powders, granules or pellets, containing or releasing nano-objects or submicrometer particles.