Young daphnids, aged less than 24 hours at the start of the test are exposed to the test substance at a range of concentrations for a period of 48 hours. Immobilisation is recorded at 24 hours and 48 hours and compared with control values. The results are analysed in order to calculate the EC50 at 48h. Determination of the EC50 at 24h is optional.
Our team comprises proven experts in testing routine and problematic (hydrolytically unstable, highly sorptive, volatile, low solubility) materials and regularly develop novel methodologies, exposure systems and analytical techniques to support bespoke testing strategies. We operate in modern GLP-compliant facilities striving to provide the highest quality service possible. We offer a comprehensive range of acute, chronic and bespoke aquatic ecotoxicology studies with a variety of test species and we can conduct testing to a variety of test guideline requirements.