Because Nanomaterials may have different properties compared to the same substance in bulk form, there is a need to have internationally standardised test methods to characterise nanomaterials, their physical-chemical properties, environmental fate, effects on environmental species and on human health. To intensify this endeavour, the NANOMET project, funded by the European Union, was launched in May 2020. 

The OECD keeps abreast of major policy issues related to manufactured nanomaterials, advanced materials and other emerging issues. For instance, to minimise the gap between technological innovations and the development of suitable risk assessment tools and frameworks. Further work is underway to assist countries in bringing together safety and sustainability. Other efforts include developing tools to assist countries in assessing the exposure to nanomaterials.