SSD fitting
Species sensitivity distributions and HCx estimates.
OECD No. 54
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Ecotoxicology apps, free in your browser.
Fit dose-response models, build species sensitivity distributions and explore ecotoxicological datasets. No account needed.
Each app starts a private session when you open it, which can take up to a minute. These are beta and demonstration versions under active development: results are for exploration, and the apps may change. Tell us if you need a validated analysis.
Standard OECD statistics
Dose-response and SSD
Standardised statistical models following OECD guidelines, used in regulatory testing.
Survival & mobility
Dose-response models for binary data such as survival or immobilisation.
OECD TG 202, 203, 205, 207, 210, 211, 212, 249, 401, 455
Reproduction & count
Dose-response models for count data such as offspring or eggs.
OECD TG 206, 208, 211, 218/219, 220, 221, 222, 227, 229, 232, 240; US EPA OCSPP 850; REACH R.7
Weight & size
Dose-response models for continuous data such as growth.
OECD TG 201, 208, 215, 218/219, 221, 225, 227; US EPA OCSPP 850; REACH R.7
Ecotoxicology datasets
Explore reference data
Collections of ecotoxicological data on toxicokinetics, survival, growth and soil thresholds.
