Bromocresol purple-bromothymol blue mixed indicator is widely used in analytical chemistry for pH determination in various solutions. It is particularly effective in titrations where a precise pH range needs to be monitored, such as in acid-base titrations. The mixed indicator provides a clear and distinct color change, making it easier to identify the endpoint of the titration. This indicator is also employed in biological and environmental studies to measure pH levels in different samples, including water, soil, and biological fluids. Its ability to provide accurate pH readings within a specific range makes it a valuable tool in laboratories for quality control and research purposes.