Regulation (EC) No 648/2004 of the European Parliament and of the Council of 31 March 2004 on detergents (Text with EEA relevance) (c. 648)

ANNEX VIII U.K. TEST METHODS AND ANALYTICAL METHODS

3. Determination of non-ionic surfactants in biodegradation test liquors U.K.

3.2. Reagents and Equipment U.K.

3.2.10. Standard acetate buffer: dissolve 40 g solid sodium hydroxide AR, in 500 ml water in a beaker and allow to cool. Add 120 ml glacial acetic acid (3.2.7). Mix thoroughly, cool and transfer to a 1 000 ml volumetric flask. Make up to the mark with water. U.K.