# Commission Directive 2004/73/EC of 29 April 2004 adapting to technical progress for the twenty-ninth time Council Directive 67/548/EEC on the approximation of the laws, regulations and administrative provisions relating to the classification, packaging and labelling of dangerous substances (Text with EEA relevance), Division: Aerobic test system

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

The aerobic test system described in this test method consists of an aerobic water layer (typical oxygen concentrations range from 7 to 10 mgl-1 ) and a sediment layer, aerobic at the surface and anaerobic below the surface (typical average redox potentials (Eh) in the anaerobic zone of the sediment range from -80 to -190 mV). Moistened air is passed over the surface of the water in each incubation unit to maintain sufficient oxigen in the head space.

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Source: https://www.legislation.gov.uk/eudr/2004/73/annex/2I/division/8/division/1 (the official version)
Page: https://openlegislation.uk/eu-directive-2004-73/annex-2I/division-8/division-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.