Utilization of microreactors in high throughput chemical manufacturing requires cost-effective manufacturing along scale-up of microreactors.As a result,visual access to the flow region is eliminated and our understanding of flow behavior in these complex geometries becomes limited.We require non-visual and non-distructive techniques to characterize hydro dynamic behavior in these systems for design evaluation.Additionally,these techniques can serve as a diagnostic tool to detect defects associated with manufacturing.In previous work,a sensitivity study was performed on RTD analysis for detecting channel obstruction in micro channel hemodialyzers.