pH test strips are widely used in various fields to determine the acidity or alkalinity of a solution. In laboratories, they are essential for quick pH measurements during experiments, ensuring accurate results in chemical reactions or biological studies. In the food and beverage industry, these strips help monitor the pH of products to maintain quality, safety, and taste, particularly in processes like fermentation or preservation. In agriculture, pH test strips are used to analyze soil acidity, helping farmers optimize conditions for plant growth. They are also utilized in aquariums and hydroponics to maintain the ideal pH balance for aquatic life or plants. Additionally, they play a role in medical and cosmetic applications, such as testing the pH of skin or urine for health diagnostics. Their simplicity, portability, and affordability make them a practical tool for both professionals and hobbyists.