The OECD Working Party on Manufactured Nanomaterials (WPMN) is the most important focal point for efforts to assess the environmental risks and health effects of nanomaterials. There are several projects led by their respective Steering Groups (SGs) under the WPMN. These include developing an OECD database on existing research (SG1 and SG3), systematic global safety testing of a representative set of manufactured nanomaterials (SG3), assessing and improving the applicability of chemicals testing methods (SG4 and SG7) (linkki testiohjesivulle) and producing guidelines for risk assessment and risk management (SG6 and SG8).
The WPMN has produced several guidelines published by the OECD. The Nordic countries also participate in the OECD's work in a coordinated manner under a project funded by the Nordic Council of Ministers. The WPMN also cooperates with the OECD Working Party on Nanotechnology (WPN).
A subgroup on the application of provisions on nanomaterials (CASG-Nano) has been established under the Competent Authorities for REACH and CLP (CARACAL). There are also three independent projects, REACH Implementation Projects on Nanomaterials (RIP oNs), that aim to create technical guidelines for substance identification, information requirements and safety assessments regarding nanomaterials. Finland participates in these consultant-led projects alongside experts from other countries as a member of the Stakeholder Consultancy Group. As well as these projects, the European Commission also provides a strong contribution to the work of the OECD Working Party on Manufactured Nanomaterials (WPMN).