PBS [10x] (sterile)

Phosphate Buffered Saline (PBS) is a balanced salt solution, often used for the washing of tissue blocks, the rinsing of cells, and the preparation of other reagents. As a diluent for cell counting, etc.
This 1x concentrate PBS sterilized by 0.1um filter; pH7.2-7.4 and it contains:
KCl (2010mg/mL; 27.0mM)
KH2PO4 (2720mg/mL; 20.0mM)
NaCl (80000mg/mL; 1370.0mM)
Na2HPO4•12H2O (38500mg/mL; 100.0mM)