The formation of titanium dioxide particles in the form of anatase is an important step in the sulphate process used to manufacture white pigment. This paper investigates the influence of stirrer speed on anatase precipitation carried out in batch mode. Stirrer speed was varied between 200 and 1200rpm. Though its effect on the chemical kinetics of precipitation was negligible, intensity of stirring determines the final particle size of anatase aggregates in suspension. Changes to primary agglomerate and crystal population due to varying stirrer speed are reported. The Kolmogoroff eddy size estimated for the system was an order of magnitude or more larger than the largest particle size encountered during precipitation. In our study, the largest aggregates (mean size of 1.52 mum) were obtained at a stirrer speed of 200 rpm. Running the precipitation at stirrer speed lower than 188 rpm would result in accumulation of particles at the bottom of the stirred vessel,