How are these tests performed?
The reference organisms are exposed to different concentrations of a product or dilutions of a certain water sample during a certain period of time. Depending on the reference organism, the effect is assessed at different levels (reproduction, growth rate, mortality, ...).
The results are processed into a dose-response curve that reflects the effect according to the dilution of the product or water sample. The concentration or dilution at which 50% of the test population experiences an effect, the so-called EC50 value, is derived from this. Based on this value, the toxicity of a product or water sample can be assessed.
Overview toxicity tests
Acute toxicity tests
- Bacterium: Vibrio fisherii
- Freshwater algae: Pseudokirchneriella subcapitata
- Marine algae: Phaeodactylum tricornutum
- Freshwater crustacea: Daphnia magna
- Freshwater crustacea: Ceriodaphnia dubia
- Freshwater crustacea: Thamnocephalus platyurus
- Marine crustacea: Artemia fransiscana
- Freshwater rotifera: Brachionus calyciflorus
- Marine rotifer: Brachionus plicatilis
- Brackish water copepode: Acartia tonsa
Chronic toxicity tests
- Ciliaat: Tetrahymena thermophila
- Freshwater crustacea: Daphnia magna
Would you like more information or a quotation for ecotoxicity testing?
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