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The ECETOC Aquatic Toxicity database was used to investigate the response of the Cladoceran Daphnia magna Straus in various types of toxicity test and to compare its sensitivity with that of other invertebrates and fish. Repeatability of 48-h EC50 data was good, the range being no more than a factor of 3 for eight of the eleven chemicals where multiple results were available. In 21-day tests, for...
In assessing the environmental risk of a chemical it is necessary to predict safe levels in the environment, but this requires extrapolation from relatively small databases. To improve understanding of the use of existing data for such extrapolations, the European Centre for Ecotoxicology and Toxicology of Chemicals (ECETOC) established a Task Force to assemble a high-quality database on aquatic...
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