The pH 2.00 buffer solution at 25C is used for calibrating and verifying pH meters pH electrodes and other pH-measuring instruments in the strongly acidic range.

Its purpose is to provide a stable and accurately known pH value of 2.00 at 25C ensuring that pH measurements are accurate and reliable.

The pH 2.00 buffer solution is a standardized acidic reference solution that resists changes in pH when small amounts of acid or base are added. The solution has a specified pH of 2.00 at 25C although its pH may vary slightly with changes in temperature.