Nanomaterials are up to 10 000 times smaller than the width of a human hair and are found in many products from paints to cosmetics. Nanomaterials may have different properties compared to the same substance in bulk form.

Just like any other chemical substance, nanomaterials have to be assessed for their safety using appropriate tools and methodologies. For that reason, the OECD identifies and develops standardised methods that can be used to generate relevant and reliable data. To intensify this endeavour and support the OECD, a three-year project called NANOMET, funded by the European Union was launched in May 2020.

The OECD and the EU project NanoHarmony released a report summarising the current status of projects to develop or adapt the OECD Test Guideline (TGs) and Guidance Documents (GDs) for nanomaterials as well as the outlook per project. The list was compiled in a common effort by EU projects NanoHarmony and NANOMET and is intended to be a living document that will be updated regularly.

• International NanoHarmony and NANOMET Workshop on nano-related OECD Test Guideline Development (29 and 30 June 2022)
  Watch the live stream (Day 1 - Day 2). 

• Webinar: Assessing the dispersion stability and dissolution rate of nanomaterials in the environment (25 February 2021)
  Presentations: Introduction, Test Guideline No. 318: Dispersion Stability of Nanomaterials in Simulated Environmental Media and its accompanying Guidance Document
  The recording is available in Spanish.

• Webinar: Guidance document No. 317 on aquatic & sediment ecotoxicity testing of nanomaterials (26 January 2021)
  Presentations: Introduction, Guidance Document 317 on Aquatic and Sediment Ecotoxicity Testing of Nanomaterials
  The recording is available in Spanish.

• Guidance Document on testing Nanomaterials using OECD TG No. 312 “Leaching in soil columns"
  
• Guidance document No. 318: Solubility and dissolution rate
• Guidance document No. 317: Aquatic and sediment ecotoxicity testing
• Study Report on Applicability of the key event-based TG 442
• Study Report on a test for removal in wastewater treatment plants of gold manufactured nanomaterial
• Report of the interlaboratory comparison testing for the GD to support the implementation of Test Guideline No. 312 for Nanomaterial safety testing
• Validation report supporting TG 318
• Validation report supporting TG 125
• Tool accompanying guidance document No. 318
• Study Report and Preliminary Guidance on the Adaptation of the In Vitro micronucleus assay (OECD TG 487)

This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 887268. Previous financial contributions from the European Union supported the development of publications referenced here published before 2020.