To determine the effect of surface – bound pollutants in the aquatic environment and in soils, we apply tests with
- fish embryos
- water plants (Myriophyllum spec.)
- nematodes
The test organisms are exposed to aquatic sediments, soils or other finely granulated material in defined test solutions. The contact tests detect the effects of substances mediated by the direct contact of the test organisms to the solids or by pore water.