In percolation for syrups, the percolator design near the lower orifice should be which shape?

• A. Spherical
• B. Cylindrical or cone-shaped
• C. Cubical
• D. Pyramidal

Answer: (B)

Focus on how liquid flows into the discharge point. For syrups, you want a path to the outlet that stays smooth and predictable, with no sudden changes in cross-section that could create turbulence or pockets of stagnation. A cylindrical or cone-shaped bottom provides a uniform or gradually tapering surface that guides the syrup steadily toward the lower orifice. This reduces flow separation, splashing, and the formation of dead zones where the viscous liquid could cling or trap air, making percolation inconsistent and harder to clean.

In contrast, shapes with corners or rounded pockets tend to harbor stagnant syrup or cause erratic flow patterns, which disrupt steady discharge and complicate cleaning. Therefore, a cylindrical or cone-shaped design near the lower outlet best supports steady, efficient percolation of syrups.