pH standard solutions

pH standard solutions are carefully prepared liquids with a precise acidity or alkalinity level, used as benchmarks to calibrate pH measuring instruments like pH meters. They contain known concentrations of hydrogen ions, which determine their pH value—the measure of acidity or basicity. By comparing a sample's pH to that of a standard solution, accurate pH measurements can be achieved. These solutions are essential in various fields, including chemistry, medicine, and environmental science, to ensure testing consistency and reliability when analyzing the acidity of different substances.