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

Starch Solution
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Starch Solution Triturate 1.0 g of soluble starch with 5 mL of water and whilst stirring pour the mixture into 100 mL of boiling water containing 10 mg of mercuric iodide.

Carry out the test for sensitivity each time the reagent is used.

Test for sensitivity To a mixture of 1 mL of the starch solution and 20 mL of water, add about 50 mg of potassium iodide and 0.05 mL of iodine solution R1. The solution is blue.