PBS, phosphate buffered saline, is an isotonic solution used in molecular biology, cell culture, protein chemistry, and biochemical applications. PBS is nontoxic to cells and has similar osmolarity and ion concentrations as the human body. pH 7.4 is most commonly used with cell culture. …

Tris-HCl, Tris Hydrochloride, is a buffer for molecular biology, protein chemistry, and biochemical applications. Prepared buffer solutions provide a time-saving and convenient option. Contains 1 M Tris-HCl. The pH (range 6.5 to 10.2) differs by part number.