Potassium phosphate buffer solution is widely used in biological and biochemical research to maintain a stable pH environment. It is essential in various laboratory procedures, including enzyme assays, protein purification, and cell culture applications. The buffer helps to stabilize the pH, ensuring optimal conditions for enzymatic reactions and maintaining the integrity of biological samples. In molecular biology, it is often employed in DNA and RNA extraction processes, as well as in gel electrophoresis to provide a consistent pH for accurate separation of nucleic acids. Additionally, it is used in diagnostic kits and immunoassays to ensure reliable and reproducible results. Its compatibility with many biological systems makes it a versatile choice for maintaining pH in a wide range of experimental setups.