Development of an interactive tool for the implementation of environmental legislation in Nanoparticle Manufacturers . I-nanotool is a project co-funded by the European Community under the LIFE+ Financial Instrument, under the Grant Agreement LIFE12 ENV/ES/000326. The project objective is to contribute to the efficient implementation of the environmental policy and legislation in nanomaterials manufacturers companies, specially SMEs. It includes the development of an interactive platform (e-tool) for environmental self-diagnosis addressed to nanoparticles manufacturers in European countries.