The boiling point of water depends on the pressure, however in a sugar factory it is most often not water that is boiling, but juice or syrup. The boiling point of a solution of sugar in water, or of a juice, under a given pressure, increases with the concentration of the solution, or the brix of the juice. Furthermore decreasing purity also increases the boiling point
You can do online calculations of boiling point elevation by entering the data required below. Select the parameter to be used as the graph's x-axis by clicking the appropriate radio button
Tables of boiling point elevation are given in Sugar Technologists Manual by Z. Bubnik, P. Kadlec, D. Urban, M. Bruhns available from bartens.com