Both the complete dissolution of the sample plus the maintenance of a pH between 5 and 7 are extremely important in order to achieve accurate water determination results. When strong acids or alkalis are used as samples, the pH value can be pushed out of equilibrium. The addition of special buffer solutions ensures that the Karl Fischer reaction can proceed in the correct pH range. When working with samples that may disturb the pH of the Karl Fischer reaction such as strong bases or strong acids, we offer two ready-to-use buffer solutions. These can be added to maintain the optimum pH range for accurate Karl Fischer results.