# Regulation (EC) No 648/2004 of the European Parliament and of the Council of 31 March 2004 on detergents (Text with EEA relevance), Division 1.1: Definition

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

This method describes a laboratory model of the activated sludge + secondary settler which is designed to simulate municipal sewage treatment. The conditions described are those from the Directives that preceded this Regulation. Improved state-of-the-art operating conditions can be applied to this test method as described in EN ISO 11733.

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Source: https://www.legislation.gov.uk/eur/2004/648/annex/VIII/division/1/division/1.1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2004-648/annex-VIII/division-1/division-1.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.