# Commission Regulation (EC) No 761/2009 of 23 July 2009 amending, for the purpose of its adaptation to technical progress, Regulation (EC) No 440/2008 laying down test methods pursuant to Regulation (EC) No 1907/2006 of the European Parliament and of the Council on the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) (Text with EEA relevance), Division 1.8.2: Stock solutions of test substance

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

Deionised water is used to prepare stock solutions of the test and reference substances (see first paragraph in section 1.8.7). The deionised water should be free of substances that may be toxic to microorganisms, and dissolved organic carbon (DOC) should be no more than 1 mg/L (6).

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Source: https://www.legislation.gov.uk/eur/2009/761/annex/V/division/1/division/1.8/division/1.8.2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2009-761/annex-V/division-1/division-1.8/division-1.8.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.