Three dispersing disc stirrers (diam. 52, 75 and 98 mm) with slanting blades (inclination angle 22.5 degrees, 24.2 degrees and 20,0 degrees) were used for mixing an aq. soln. of a polymer to det. the mixing power characteristics of the stirrers. A dimensionless equation for Euler no. was derived by correlation anal. from Reynolds no. and stirrer and mixer sizes.