OCNS Suite

Wherever chemicals are used offshore, the Offshore Chemical Notification Scheme (OCNS) requires a range of ecotoxicological tests to be carried out.

The OCNS suite is a defined range of ecotoxicological tests that are needed to meet the requirements of the OCNS in order to provide sufficient data to allow assessment of potential environmental risk in the marine environment.

The OCNS requires the collection of bioaccumulation, biodegradation, and aquatic toxicity data from three trophic levels (algae, crustacea and fish). This data is used to predict the potential ecosystem risk. This information can then be used to rank the product by Hazard Quotient (HQ).

Further general information regarding the OCNS can be found in the associated information document 'OCNS - Specifications'.

The ecotoxicology tests that Chemex provide to cover the requirements of the OCNS are:

Click on the links to see further information on each individual test.

Call to Action

For further information, and to discuss the requirements of the OCNS and how Chemex can help with your OCNS chemical registration, please contact a member of our team on +44 (0)1954 252519, enquiries@chemex.co.uk or using the online contact form.

Contact Information

For all enquiries, call our sales team on

+44 (0)1954 252519