Phosphate-buffered saline (PBS, 10X) is an isotonic, non-toxic to most cells and is used in biological research. It is associated with ethylenediaminetetraacetic acid (EDTA) and is used to disengage attached and clumped cells. It also helps to maintain a constant pH.
Cechella, B. C.; Almeida, J. D.; Felippe, M. C. S.; Teixeira, C. D. S.; Bortoluzzi, E. A.; Felippe, W. T. Influence of phosphate buffered saline on the bond strength of endodontic cement to dentin. Braz J Oral Sci 2015, 14 (2), 126-129.
Kundu, D.; Gill, A.; Holley, R. Use of low-dose irradiation to evaluate the radiation sensitivity of Escherichia coli O157: H7, non-O157 verotoxigenic Escherichia coli, and Salmonella in phosphate-buffered saline. J. Food Prot. 2013, 76 (8), 1438-1442.