The Test Guideline 239 is mentioned in the EU data requirements for biocides and plant protection products. This ecotoxicological test using water-sediment exposures is important since the macrophyte Myriophyllum spicatum is considered one of the standard surrogates for submerged rooted dicotyledonous species. The current test guideline should ideally be aligned with the revised TGs 218/219 and, where possible, consider the findings of the Germany-UBA project ‘Review of the OECD Test Guidelines relevant to environmental assessment with regard to the state of the art in science and technology’.
First commenting round for the draft revised Test Guideline 239 describing the water-sediment Myriophyllum spicatum toxicity test
- Submission period
- 23 Dec 2024 - 10 Feb 2025
Background public consultation
Project description
The revision of TG 239 aims among others to include requirements of some analytical measurements rather than only recommendations, calculations and expression of endpoints, mass balance, revising statistical analyses, provide additional clarifications, etc.
The revised Test Guideline 239 has been reviewed by the dedicated ad hoc Expert Group prior to starting the review by the Working Party of National Coordinators of the Test Guidelines Programme.
How to contribute
The draft revised Test Guideline 239 is currently under a commenting round by the Working Party of the National Coordinators of the Test Guidelines Programmes and open for comments from the public at the same time. Interested parties are invited to contact their National Coordinators prior to 10 February 2025.
