Bromocresol Green Sodium Salt is widely used as a pH indicator in various analytical and laboratory applications. It is particularly effective in the pH range of 3.8 to 5.4, where it transitions from yellow (acidic) to blue (basic). This property makes it valuable in titrations to determine the endpoint of acid-base reactions, especially in biochemical and environmental testing. It is also employed in microbiology for staining and identifying certain types of bacteria. Additionally, it is used in educational settings to demonstrate pH changes in experiments. Its stability and distinct color change ensure reliable results in both qualitative and quantitative analyses.