Description_x000D_ General description_x000D_ Phosphate buffered saline (PBS) is an isotonic buffer solution. This water-based salt solution is made up of disodium hydrogen phosphate, sodium chloride and, in some preparations, potassium chloride and potassium dihydrogen phosphate. PBS is generally used in biological research._x000D_ Application_x000D_ It has also been used for the dilution of capture antibody during α-hemolysin (Hla) enzyme-linked immunosorbent assay (ELISA)._x000D_ Phosphate buffered saline has been used in bis-benzimide accumulation assay._x000D_ Components_x000D_ Sodium chloride, 145 mM (0.85%) in phosphate buffer, 150 mM