Comments on the iodide/iodate method for characterising micromixing

Qualitatively the iodide/iodate method, in which the iodine yield is measured, has provided reliable results for assessing the extent of micromixing of miscible reagents. Quantitative treatment requires however a robust kinetic model. Comparison of published models shows large differences due to the complexity of the iodine-forming reaction. The kinetics needs to be re-determined employing modern techniques for fast reactions and under the conditions (concentrations, ionic strength, etc.) used in mixing studies.