Veronal Buffered Saline (VBS) is widely used in immunology and serology for its ability to maintain a stable pH environment, which is crucial for various biological assays. It is commonly employed as a diluent for antibodies, antigens, and other reagents in immunological tests such as ELISA and immunofluorescence. VBS is also utilized in complement fixation tests, where it helps preserve the activity of complement proteins by providing optimal ionic strength and pH. Additionally, it serves as a buffer in cell culture applications, ensuring consistent conditions for cell growth and experimentation. Its compatibility with biological systems makes it a reliable choice for maintaining the integrity of sensitive biological materials during laboratory procedures.