High growth inhibition and particle monodispersity are determined by the concentration of additive Ca 2+ ions available in the suspension. In co-precipitation methods, increased solutes collision occurring in high C P conditions may prevent additives from effectively reaching the surfaces of the crystals. However, the experimental setup in this study avoids such. The nucleation step is separated from the growth inhibition region where additive Ca 2+ ions are waiting, as impurities, to adsorb on the dispersed precipitates (Figure ). Therefore, the irreversible adsorption of additive Ca 2+