# Regulation (EC) No 1272/2008 of the European Parliament and of the Council of 16 December 2008 on classification, labelling and packaging of substances and mixtures, amending and repealing Directives 67/548/EEC and 1999/45/EC, and amending Regulation (EC) No 1907/2006 (Text with EEA relevance), Division 2.13.4.4

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

In cases where substances or mixtures generate a pressure rise (too high or too low), caused by chemical reactions not characterising the oxidising properties of the substance or mixture, the test described in Part III, sub-section 34.4.2 of the UN RTDG, Manual of Tests and Criteria shall be repeated with an inert substance, e.g. diatomite (kieselguhr), in place of the cellulose in order to clarify the nature of the reaction and to check for a false positive result.

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Source: https://www.legislation.gov.uk/eur/2008/1272/annex/I/division/2/division/2.13/division/2.13.4/division/2.13.4.4 (the official version)
Page: https://openlegislation.uk/eu-regulation-2008-1272/annex-I/division-2/division-2.13/division-2.13.4/division-2.13.4.4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.