# Commission Regulation (EU) No 283/2013 of 1 March 2013 setting out the data requirements for active substances, in accordance with Regulation (EC) No 1107/2009 of the European Parliament and of the Council concerning the placing of plant protection products on the market (Text with EEA relevance), Division 6: For those guidelines which allow for the study to be designed to determine an effective concentration (ECx), the study shall be conducted to determine an EC10, EC20 and EC50, when required, along with corresponding 95 % confidence intervals. If an ECx approach is used, a no observed effect concentration (NOEC) shall still be determined.

Extent: E+W+S+N.I.

Existing acceptable studies that have been designed to generate a NOEC shall not be repeated. An assessment of the statistical power of the NOEC derived from those studies shall be carried out.

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Source: https://www.legislation.gov.uk/eur/2013/283/annex/section/8/division/1/division/6 (the official version)
Page: https://openlegislation.uk/eu-regulation-2013-283/annex/section-8/division-1/division-6
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.