Phosphate Buffer is widely used in biological and chemical research to maintain a stable pH environment. It is essential in various laboratory procedures, including cell culture, protein purification, and enzyme assays, where consistent pH levels are critical for accurate results. In molecular biology, it is employed during DNA and RNA extraction processes to prevent degradation. Additionally, Phosphate Buffer is utilized in diagnostic kits and immunoassays to ensure optimal conditions for antibody-antigen interactions. It also plays a role in pharmaceutical formulations, where it helps stabilize drugs and maintain their efficacy. Its buffering capacity makes it a reliable choice for experiments and applications requiring precise pH control.