how to pepare 6.8 pH phosphate buffer

Answer Posted / swathi

Take 0.01M KH2PO4 (1.36g) in 1000mL water and sonicate it
properly and check the pH and adjust the pH to 6.8 by using
Orthophosphoric acid if pH is more than 6.8,or use KOH or
NaOh if pH is less than 6.8

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