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1 M Sodium Phosphate Buffer Stock Solution (1 liter)

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# Solution A:

Dissolve 138.0 g NaH2PO4?H2O in 1 liter dH2O (pH 7.0). # Solution B:

Dissolve 142.0 g Na2HPO4 in 1 liter dH2O (pH 7.0). # Mix 423 ml Solution A with 577 ml Solution B. # Autoclave and store at room temperature.

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15y ago
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12y ago

describe the preparation of 100 ml of 0.1molar phosphate buffer having pH 7

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9y ago

To make this buffer solution you must combine the solutions of K2HPO4 and KH2PO4. To adjust the pH to 7.4 use a meter and add parts of each solution until the proper pH is met.

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Q: How do you make 50 mM potassium phosphate buffer pH 7.4?
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