Hydrochloric acid alcohol (0.03 % / 96 %) is used in histological processes, especially for the removal of excess dyes in stained tissue samples. Hydrochloric acid, dissolved in ethanol at the specific concentration, enables accurate differentiation of staining. The slight acidity of the alcohol moderately lowers the pH of the solution, which sharpens the differentiation of the stain and efficiently removes excess dyes. This results in improved visualization and interpretation of tissue samples under the microscope. The product's precise volumetric ratios ensure consistent and reliable results every time.