The Potassium Phosphate Buffer is frequently used as a buffering agent in molecular biology, biochemistry, and chromatography. With a pH range of 5.8 to 8.0 and high solubility in water, the potassium phosphate buffer is widely used in various biological applications, including the process of the interaction between ions and biomolecules, for protein extraction and as a reagent in blocking buffer for immunolabeling.