This International Standard specifies a method for the determination of the water solubilizing power and the water emulsifying power of a dry cleaning detergent or similar auxiliary product with a usual concentration of 3 to 5 g/l in cleaning vats. The method is applicable to other concentrations of auxiliary products in the solvent. The method described in this International Standard is not recommended for higher concentrations of auxiliary products containing the surface active agent in the solvent and water, for example as is the case in Chemical cleaning processes using brushing or spraying.