The table below helps to identify the mixing intensity required for a given scale of mixing.

TYPEDESCRIPTIONMIXSCALETYPICAL APPLICATION
MILD LITTLE SURFACE MOTION, NO SPLASH, MILD RIPPLE 1 MOST STORAGE APPLICATIONS.LOW VISCOSITY BLENDING OF LIQUIDS WITH MINIMAL DIFFERENCE IN SPG'S & VISCOSITY. VISCOSITY IN THE RANGE OF 100 CPS AND BELOW. LIGHT SOLIDS MOVING ON TANK BOTTOM, NO SUSPENSION.
2
3
MODERATE SLOW ROLLING LIQUID SURFACE OCCASIONAL WAVE WITH LITTLE SPLASH 4 LOW TO MEDIUM VISCOSITY BLENDING WITH SP.G. DIFFERENCE LESS THAN 0.6 WITH VISCOSITIES GENERALLY BELOW 5000 CPS.SOLIDS MOVING OFF BOTTOM BUT NOT SUSPENDED ANYMORE THAN 20% THROUGHOUT TANK.  EASY HEAT TRANSFER.
5
6
VIGOROUS SOME SPLASH WITH BOILING ACTION AT SURFACE, OCCATIONAL VORTEX 7 MEDIUM VISCOSITY LIQUID/LIQUID BLENDING.  SP.G. DIFFERENCE LESS THAN .85 WITH VISCOSITY LESS THAN 10,000 CPS.  MODERATELY SUSPENDED SOLIDS THROUGHOUT 75% ON TANK.  GOOD HEAT TRANSFER.
8
VIOLENT SPLASHING AND LARGE WAVE FORMATIONS, ERRATIC VORTEXING 9 LIQUIDS WITH VISCOSITIES LESS THAN 25,000 CPS WITH SP.G. DIFFERENCE OF 1.0. SOLIDS SUSPENDED TO COMPLETE UNIFORMITY.
10

* MixScale is Bulk Fluid Velocity / 6

Bulk fluid velocity (BFV) is calculated from the corrected impeller pumping capacity (cubic feet per minute), divided by tank cross sectional area (sq ft).  Units are ft/min.