7.3.2 1.0% (w/v) Soluble Starch Solution (Starch)
Prepare 25 ml in Reagent 7.3.1 using Starch Potato Soluble, Sigma-Aldrich Product Number S2630. Facilitate solubilization by heating the starch solution in a glass beaker directly on a heating/stir plate using constant stirring. Bring to boil and maintain the solution at this temperature for 15 minutes. Allow the starch solution to cool to room temperature with stirring. Return the starch solution to its original volume (25 ml) by the addition of purified water and dispense aliquots for assay with stirring.