The purpose of this study is to determine the acute toxicity of a substance to earthworm (Eisenia fetida) after 7 and 14 days of exposure. On the basis of the results of a non-GLP pre-test, the applied concentrations for the main test are selected. The test item is mixed into the artificial soil.
Usually, a dose response study with five concentrations in a geometric row with 4
replicates is performed. In total 40 earthworms are exposed to the test item per treatment group i.e.ten individuals per replicate. Each test comprises a negative control. A test with a toxic reference substance is performed once a year to proofs the sensitivity of the test system.