Flow generated by impellers tip is opposite to the bulk flow produced by the central part. In many case where the slurry fluidity reduces due to high solid concentration. Tip of the impeller provides momentum to the fluid near vessel wall. These are mainly used for slurry with high solid concentration. It efficiently operates at much higher impeller to tank diameter ratio and have higher flow capacity than conventional impellers.

In many application, flow regime is not same throughout the process. It changes from turbulent to transition and even laminar flow in many application. This is most efficient impeller system in such application. It has capability to mix Newtonian as well as Non-Newtonian fluids.

It has worked successfully for many application which traditionally required helical ribbon or anchor with or without gate type. It is most suited for low to medium shear application.