Entries by wp_admin

New publication on TKTD modeling of sublethal endpoints for time‐variable toxicant exposure of Ceriodaphnia

Toxicokinetic-toxicodynamic (TKTD) modeling can integrate all available data from individual‐level bioassays into a single framework and enable refined risk assessments by extrapolating from laboratory results to time‐variable exposure scenarios. Dynamic energy budget (DEB) models coupled with TKTD modules (DEB-TKTD) are an approach to assess and predict sublethal effects of chemicals on individual organisms. However, thorough […]

Fish short-term reproduction assay (OECD 229)

The fish short-term reproduction test is an in vivo screening assay that provides information about possible endocrine-mediated effects on adult fish. Within the OECD Conceptual framework for the testing and assessment of endocrine disrupting chemicals, it is a level 3 assay. We perform this test according to OECD test guideline 229 (Fish short-term reproduction assay, […]

Report published on HP 14 classification of mirror entries in the List of Wastes

Depending on its composition, waste from mirror entries has to be categorized as hazardous or non-hazardous. The hazard property ‘ecotoxic’ (HP 14) can be evaluated based on the content of hazardous substances in the respective waste or using ecotoxicity tests with samples and eluates of this waste. At the EU level, specific requirements for the […]

Fish early life stage test

Fish early-life stage tests are required for environmental risk assessments of industrial chemicals, plant protection products, biocides, and human and veterinary pharmaceuticals to evaluate chronic effects on the sensitive early life stages of fish. We perform these tests according to OECD test guideline 210 (Fish, early-life stage toxicity test, revised in 2025) in compliance with […]

R&D activities for private companies

ECT received formal approval for carrying out R&D activities for private companies, which enables a tax credit (Crédit d’Impôt Recherche, CIR) for our French customers.

In-house analytical services

In-house analytical services under GLP are now available at ECT. Analytical verification of actual test concentrations is essential in ecotoxicity studies, and we are now prepared to provide this service in-house.

Report published on the evaluation of soil biodiversity via DNA from soil organism samples

Germany still lacks a nationwide and standardised survey of soil organisms, although a comprehensive infrastructure for such a survey is available with approx. 800 permanent soil monitoring sites (Bodendauer­beobachtungsflächen, BDF). At present, not all federal states perform biodiversity surveys on their permanent soil monitoring sites. This is most likely due to the fact that the […]