Potassium phosphate buffer solution is widely used in biological and biochemical research to maintain a stable pH environment, which is crucial for the proper functioning of enzymes, proteins, and other biomolecules. It is commonly employed in cell culture media to support cell growth and viability by providing optimal pH conditions. In molecular biology, it is utilized in procedures such as DNA and RNA extraction, PCR, and gel electrophoresis to ensure consistent and reliable results. The buffer is also essential in chromatography techniques, including HPLC and ion-exchange chromatography, to maintain the integrity of samples and improve separation efficiency. Additionally, it plays a role in diagnostic assays and clinical laboratories for accurate testing and analysis of biological samples. Its buffering capacity makes it suitable for use in various pharmaceutical formulations to stabilize active ingredients and maintain product efficacy.