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BS EN 1262:2003
Surface active agents. Determination of pH value of solutions or dispersions (British Standard)
This European Standard specifies a method for the determination of pH value of solutions or dispersions of surface active agents and gives a method for their preparation. The method is applicable to aqueous solutions containing anionic, cationic and non-ionic surface active agents, ampholytic surface active agents and products in solution containing surface active agents.
British Standards Institution [bsi]