English: Dependance of equilibrium (saturation) concentration of a solute with temperature. The leftmost function represents the equilibrium between an undersaturated solution and a supersaturated solution, while the rightmost function represents the equilibrium between a supersaturated solution and a solid (where the solute has fully crystallised). At a constant temperature, solute is added to the solution, so that its concentration evolves following the arrows. The solution will become saturated upon reaching ${\displaystyle c_{L}^{eq}\,\!}$, and will fully crystallise upon reaching ${\displaystyle c_{S}^{eq}\,\!}$.