The pH 8.00 buffer solution at 25C is used for calibrating and verifying pH meters pH electrodes and other pH-measuring instruments in the slightly alkaline range.

Its purpose is to provide a stable and accurately known pH value of 8.00 at 25C helping to ensure that pH measurements are accurate and reliable.

The pH 8.00 buffer solution is a standardized slightly alkaline reference solution that resists changes in pH when small amounts of acid or base are added. Its specified pH value is 8.00 at 25C although the pH can change slightly with temperature.