Used as a mixed pH indicator in analytical chemistry for acid-base titrations, particularly to determine endpoints of weak acids and bases with improved clarity due to the dual indicators (methyl red and methylene blue). It provides a sharp color transition from green to red as pH drops, in the range of 4.4 to 6.2. Suitable for precise pH detection in mildly acidic to neutral solutions, such as in quality control for food, beverages, or industrial processes.