Acid Alcohol 3% is a high-quality laboratory reagent commonly used in microbiology and histopathology laboratories. It is mainly applied as a decolorizing agent in Ziehl–Neelsen (ZN) staining procedures for the detection of acid-fast bacilli such as Mycobacterium tuberculosis. The solution is accurately prepared to ensure consistent and reliable staining results. It is ready to use and suitable for routine laboratory and diagnostic work. Proper formulation ensures effective differentiation without damaging stained specimens.