Bromocresol purple is widely used as a pH indicator in various scientific and industrial applications. It is particularly effective in the pH range of 5.2 to 6.8, where it transitions from yellow to purple. This makes it valuable in microbiology for preparing culture media to monitor pH changes during microbial growth. In biochemistry, it is employed in electrophoresis and chromatography to track pH gradients. Additionally, it is used in environmental testing to assess the acidity or alkalinity of water samples. Its color-changing properties also make it useful in educational settings for demonstrating pH titration experiments.