Profile: Alaqua Inc. specializes in solutions and equipment processing requirements. We offer Forced Circulation Evaporators, Falling Film Evaporators, Dairy Evaporators, Evaporative Crystallizers, and Cooling Crystallizers. Falling film evaporators can be operated with low temperature differences between the heating media and the boiling liquid, and they also have short product contact times, typically measured in seconds per pass. These characteristics make the falling film evaporator particularly suitable for heat-sensitive products, and it is today the most frequently used type of evaporator. Our evaporators must be designed carefully for each operating condition; sufficient wetting (product film thickness) of the heating surface by liquid is important for trouble-free operation of the plant. If the heating surfaces are not wetted sufficiently, dry patches and scaling will occur; at worst, the heating tubes will be clogged. In critical cases the wetting rate can be increased by extending or dividing the evaporator effects, keeping the advantages of single pass (no recirculation of product) operation.