Used in microbiology as a selective medium for the isolation and differentiation of pathogenic microorganisms, particularly for identifying mannitol-fermenting bacteria such as Staphylococcus aureus. The medium contains mannitol as a carbon source and a pH indicator to detect acid production during fermentation. It is commonly used in clinical labs to screen for potential pathogens in wound, nasal, and skin specimens. Also utilized in environmental monitoring and quality control in pharmaceutical and food industries to detect specific bacterial contaminants.