Why choose a bottom homogenizer? With a bottom-mounted design, the homogenizing head is positioned at the lowest point of the vessel. Under the influence of gravity, the material flows naturally into the shear zone. For high-viscosity, highly thixotropic pastes, this design is more effective at achieving fine particle sizes than top-mounted homogenizers (typically achieving D90 ≤ 5 microns, or even nanoscale particles).