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100 mM NaH2PO4           13.8 g NaH2PO4¡¤H2O (MW 137.99 g/mol)
10 mM Tris¡¤Cl                  1.2 g Tris base (MW 121.1 g/mol)
8 M urea                        480.5 g (MW 60.06 g/mol)
Adjust pH to 8.0 using NaOH.
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