NIA Meeting Report on the 26th MEETING OF THE WORKING PARTY ON MANUFACTURED NANOMATERIALS (OECD) - 24 June 2026, Paris

Dr. Blanca Suarez-Merino

Summary

NOTE: This document and all appended documents are confidential to registered NIA Members.

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The OECD is advancing a pipeline of over a dozen test guidelines and guidance documents for nanomaterials, with several due for approval in 2025 covering everything from toxicokinetics to intestinal fate after oral ingestion.Graphene is emerging as a priority focus, with urgent gaps identified in characterization parameters and existing test methods found to be inadequate for graphene-specific properties.No legally binding occupational exposure limits exist for nano-objects in any jurisdiction, and measurement instruments for workplace exposure show inconsistent results even across the same model, leaving a critical gap in worker protection.South Korea has proposed a new multi-year project to develop dedicated testing guidelines for nanoplastics, with completion targeted for 2029.AI is being explored as a tool to support exposure modelling for nanomaterials in occupational and environmental settings.

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