Phosphate Buffered Saline
Phosphate Buffer Saline (PBS) is a water-salt, buffer solution used to maintain a constant pH during biological and chemical applications as well as tissue processing. It contains disodium hydrogen phosphate, sodium chloride. The pH of standard and custom PBS formulations ranges from 7-7.4 when the buffer is ready to use. PBS is available in 1x or 10x concentrations, with or without calcium and magnesium and in custom formulations.