This method is suitable for comparing small amounts of samples in the quality control of pigments. This part is for use in conjunction with the methods of assessment described in ISO 8781, using an agreed binder system of high viscosity free from volatile solvents. It is restricted to high-viscosity mill bases. The results obtained are suitable for comparison with dispersibility results obtained using other methods of dispersion. For any particular application, the items of supplementary information are given in the annex.