Dispersion truncated cone

The apex of a cone is brought into close proximity, but not in to contact, of a horizontal plate (Figure 3-7). Often, the apex is truncated slightly to eliminate a sharp point. The minimum gap between the cone and plate is usually of the order of 50 xm so that this geometry may not be suitable for dispersions containing larger diameter solids. The test fluid fills the gap between the cone and the plate, and because the gap is small, only a small volume (typically, 1-5 mL) of fluid is needed. The cone is rotated and the torque is measured at various speeds of rotation. A cone and plate viscometer can be used to obtain shear stress-shear rate curves and shear-stress versus time at constant shear rate curves as described above for concentric cylinder geometry. The... 

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