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. 2023 Jul 25;4(3):102479. doi: 10.1016/j.xpro.2023.102479

10× PBS

Reagent Final concentration Amount
NaCl 1.37 M 8 g
KCl 26.8 mM 0.2 g
Na2HPO4.2H2O 97.75 mM 1.74 g
KH2PO4 17.6 mM 0.24 g
Double distilled water Up to 100 mL
Total 100 mL

When 10XPBS is diluted to 1×, the pH should be 7.4. If required, adjust the pH with HCl and check using a digital pH meter. For prolonged storage, autoclave the 10× PBS and then store it at 25°C–28°C. You can store this buffer for 4–6 months in a 250 mL glass bottle.