ANNEX VIIIU.K.TEST METHODS AND ANALYTICAL METHODS
3.Determination of non-ionic surfactants in biodegradation test liquorsU.K.
3.2.Reagents and EquipmentU.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.