In general, the sweetness potency of most intense sweeteners depends on their concentration in solution; the higher the concentration of the sweetener, the lower its potency. The sweetener's strength also depends on the temperature at which the solution is evaluated; the lower the temperature, the lower the potency of the sweeteners. These comparisons usually are made with solutions of sucrose, using expert tasters who have high sweetness acuity and who are trained in taste profiling techniques.