Ecotoxicological testing and risk assessment

Ecotoxicological tests are used to characterize the environmental hazard of chemicals, wastewater (e.g. from industry), or produced water from the offshore oil and gas industry. The data obtained in the ecotoxicological tests can be used to determine the Predicted No Effect Concentration (PNEC) for chemicals and the whole effluent toxicity for wastewater and produced water, and, thus, the data form an essential part of environmental risk assessment. DHI has a fully equipped environmental laboratory which holds an accreditation according to ISO/IEC 17025. Our environmental laboratory offers ecotoxicological tests with freshwater and marine organisms according to ISO standards, OECD test guidelines and OSPAR Convention protocols.

Ecotoxicology and risk assesment

Acute and chronic toxicity tests

Freshwater species
  • Fish – Acute toxicity test: OECD 203 / ISO 7346
  • Fish – Early life stage toxicity test: OECD 210
  • Fish – Endocrine effects, fish sexual development test: OECD 234
  • Crustacean – Acute toxicity test (Daphnia magna): OECD 202 / ISO 6341
  • Crustacean – Reproduction test (Daphnia magna): OECD 211 / ISO 10706
  • Crustacean – Chronic toxicity test (Ceriodaphnia dubia): ISO 20665
  • Algae – Growth inhibition test (Raphidocelis subcapitata): OECD 201 / ISO 8692
    Marine species
  • Fish – Acute toxicity test (Scophthalmus maximus, turbot, and Cyprinodon variegatus, sheepshead minnow): OSPAR 2006
  • Crustacean – Acute toxicity test (Acartia tonsa): ISO 14669
  • Crustacean – Early life stage toxicity test (Acartia tonsa): ISO 16778
  • Sediment re-worker – Acute toxicity test (Corophium sp.): ISO 16712 / OSPAR 2006
  • Algae – Growth inhibition test (Skeletonema sp.): ISO 10253

Ready biodegradability – Closed bottle test: OECD 301D / ISO 10707

Ready biodegradability – Manometric respirometry test: OECD 301F

Biodegradability in seawater: OECD 306

Biodegradability tests

How does it work?

You are welcome to contact us directly for an initial discussion of an ecotoxicological test program or a tailor-made design of the studies.

Key Features

Specialized in ecotoxicological tests with marine species.

Extensive experience with whole effluent toxicity tests of mixed effluents including discharged ballast water and produced water.

Access to fate modelling to calculate Predicted Environmental Concentrations (PEC) used in environmental risk assessment.

Do you want to test your samples for hazardous chemicals?

Contact our DHI experts for more information:

Gitte I. Petersen: