Methyl Red CAS:493-52-7 Manufacturer Price

Methyl Red is a pH indicator that is commonly used in microbiology to determine the ability of microorganisms to perform mixed-acid fermentation. When added to the culture medium, it turns red in acidic conditions (pH < 4.4) and yellow in neutral to alkaline conditions (pH > 6.2). This color change helps in identifying bacteria that produce stable acids when fermenting glucose. Methyl Red is especially useful in distinguishing between different species of enteric bacteria and is a valuable tool in microbial identification and characterization.