Liquid analysis refers to the process of examining the physical and chemical properties of liquids to determine their composition and quality. This can involve various techniques, such as spectroscopy, chromatography, and pH testing, which help identify substances present in the liquid and assess their concentrations. Industries like pharmaceuticals, food and beverage, and environmental monitoring rely on liquid analysis to ensure product safety and compliance with regulations. By analyzing liquids, companies can detect contaminants, verify ingredient quality, and maintain standards, ultimately protecting consumer health and the environment.