Entries by wp_admin

Activated sludge test according to updated OECD guideline 209

For the activated sludge respiration inhibition test, the updated OECD test guideline 209 (22 July 2010) requires more replicates per treatment than the former guideline. To accomplish this new requirement and process the test within a reasonable timeframe, ECT recently established a multi-channel oxygen meter that allows simultaneous measurement and processing of respiration rates in […]

Comparison of the dung and soil fauna on ivermectin-treated and untreated meadows as an example of the effects of a veterinary drug

The application of veterinary medical products to livestock can affect soil organisms in manure-amended fields and, especially, organisms colonising the dung of treated animals, thereby potentially delaying the degradation of dung on pastures. For this reason, the authorisation process for veterinary medical products in the European Union includes a requirement for higher-tier tests when adverse effects on dung organisms are observed in lower tier toxicity tests. An international research project was performed…

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Validation of a sediment bioaccumulation test with endobenthic aquatic oligochaetes by an international ring test

The aim of the project was the validation of a sediment bioaccumulation test with endobenthic oligochaetes by an international ring test. The test method was developed taking into account existing methods (UBA-reports 298 67 419 (1999) and 206 03 106/03 (1999)). A test protocol was prepared and used to run the test. A total of […]

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Validation of a sediment toxicity test with the endobenthic aquatic oligochaete Lumbriculus variegatus by an international ring test

The aim of the project was the validation of a sediment toxicity test with the benthic oligochaete Lumbriculus variegatus by an international ring test. The test method was developed taking into account existing methods. A test protocol was prepared and used to run the test. A total of 14 institutions (governmental agencies, universities, contract laboratories […]

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Preparation of a test guideline – Hypoaspis reproduction test – in particular for the assessment of plant protection products

The aim of this project, which was supported by the German Environment Agency (UBA), was to standardise and validate a test guideline using soil predatory mites, a Hypoaspis reproduction test. Testing effects of plant protection products on predatory soil mites may be needed for the listing of an active substance in Annex I of EU […]

Evaluation of a biotest battery for the ecotoxicological characterisation of waste: ring test with 60 laboratories from 15 countries

The ecotoxicological characterization of waste is part of its assessment as hazardous or non-hazardous according to the European List of Wastes (LoW, 2000/532/EC) amended by Directive 2008/98/EG and Regulation 2017/997. For this assessment, 15 hazard properties are evaluated. So far, there is no harmonised guidance for evaluation of the hazard property ‘ecotoxic’ (HP 14) using […]

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Validation of a method to measure bioaccumulation in terrestrial organisms by means of an international ring test

The aim of the project was the validation of a bioaccumulation test with terrestrial organisms (soil dwelling oligochaetes) by an international ring test. The test method was developed taking into account existing methods (UBA-reports 206 03 909 (1997) and 298 64 416 (2001)). A test protocol was prepared and used to run the test. A […]

Determination of developmental toxicity to dipterian dung flies

The aim of the project was to standardise a test guideline with two dung fly species to be used for the environmental risk assessment of veterinary pharmaceuticals, in particular endo- and ectoparasiticides excreted in dung. The test is designed to evaluate developmental toxicity of a test substance to the dung dwelling life stages of dung-dependent […]