Dispersant K 850 is generally added in emulsion paints with 0,1 – 0,5% calculated on pigments / extenders. The actual quantity required essentially depends on the type of the pigments / extenders used and should be determined from case to case (determination of the optimum quantity of the dispersing agent). Dispersant K 850 can be added alone or combined with polyphosphates (e.g. Calgon N). For combined addition mixing proportions of 1:2 to 2:1 has proven to be effective. If more than 1% of Dispersant K 850 is added, it should be tested whether the water sensitivity of the film increases. In emulsion paint procedure, Dispersant K 850 normally has to be added before addition of pigments / extenders. If necessary, Dispersant K 850 can also be added later as a post-additive.