UNE-EN ISO 17512-1:2020

This part of ISO 17512 specifies a rapid screening method for evaluating the habitat function of soils and theinfluence of contaminants and chemicals on earthworm behaviour.The sublethal test is a rapid method that reflects the bioavailability of contaminant mixtures in natural soils andsubstances spiked into soils to Eisenia fetida and Eisenia andrei. The avoidance behaviour of the worms isthe measurement endpoint of the test. This test is not intended to replace the earthworm reproduction test.Two different designs (a two section unit and a six section unit) have been developed and successfullyapplied. Both designs are applicable to either single-concentration (e.g. for assessing the quality of a field soil)or multi-concentration (e.g. for assessing the toxicity of a spiked chemical) tests. In both cases, theearthworms are allowed to make the initial choice on which compartment, control and a treatment [in the twosection test vessel between right and left side; in the six section test vessel between the (3 + 3) alternatingcompartments], to enter.