# Commission Regulation (EU) No 544/2011 of 10 June 2011 implementing Regulation (EC) No 1107/2009 of the European Parliament and of the Council as regards the data requirements for active substances (Text with EEA relevance) (repealed), Division: Circumstances in which required

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

The acute toxicity must always be determined for Daphnia (preferably Daphnia magna). Where plant protection products containing the active substance are intended to be used directly on surface water additional data have to be reported on at least one representative species from each of the following groups: aquatic insects, aquatic crustaceans (on a species not related to Daphnia) and aquatic gastropod molluscs.

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Source: https://www.legislation.gov.uk/eur/2011/544/annex/part/A/division/8/division/8.2/division/8.2.4/division/2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2011-544/annex/part-A/division-8/division-8.2/division-8.2.4/division-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.