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OECD call for interested laboratories to participate in an inter-laboratory comparison test on dissolution of metal nanomaterials in aquatic media

Experts willing to contribute to this project should contact OECD no later than 7th July 2023.

The OECD Working Group of National Co-ordinators of the Test Guidelines programme (WNT) project 3.10 led by Germany, is developing a Test Guideline for determining the dissolution of nanomaterials in aqueous environmental media. To validate the procedures for accurate measurement and data reduction, this project is looking for laboratories that can support an inter-laboratory comparison test, which will take place between October and December 2023.

A draft Standard Operation Procedure (SOP) on nanomaterial solubility and dissolution rate has been prepared to allow interested parties to estimate the needed equipment and work effort. To further support participation, two online sessions are planned to explain the SOP. These sessions will also provide an opportunity for responding to questions that interested laboratories might have. Based on the questions, the SOP could be further refined. Finally, a training session is also offered.


The dates for these sessions are as follows:

  • Online Q&A sessions: 12th July and 9th August (at 15:00 CET).
  • On-site training on the 6th of September at Fraunhofer IME, Schmallenberg, Germany

Alternative time for Q&A sessions can be offered.

Experts willing to contribute to the ILC of WNT project 3.10 should contact Mar Gonzalez, preferably no later than 7th July 2023 and copy Frank von der Kammer and Boris Meisterjahn

For additional information please contact: