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

Potassium Iodide and Starch Solution
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Potassium Iodide and Starch Solution Dissolve 0.75  g of potassium iodide in 100  ml of water, heat to boiling and add, whilst stirring, a solution of 0.5  g of soluble starch in 35  ml of water. Boil for 2 minutes and allow to cool.

Complies with the following test.

Sensitivity to iodine To 15  ml of the reagent add 0.05  ml of glacial acetic acid and 0.3  ml of 0.0005m iodine VS . A blue colour is produced.