• British Pharmacopoeia Volume IV
  • Appendices
  • Appendix I A. General Reagents

Potassium Hydrogen Carbonate Solution, Saturated Methanolic
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Potassium Hydrogen Carbonate Solution, Saturated Methanolic Dissolve 0.1  g of potassium hydrogen carbonate in 0.4  ml of water by heating on a water bath. Add 25  ml of methanol and swirl, keeping the solution on the water bath until dissolution is complete.

Use a freshly prepared solution.