Additionally, the depth profiling involved in both techniques to probe the composition within the OMIEC samples makes them necessarily destructive techniques. This limits the potential adoption of in situ/operando implementations of these techniques to capture the dynamic application relevant composition. Finally, due to the diversity and complexity of OMIEC mesoscale structure, composition throughout OMIEC is not expected to be constant (possible ion segregation between amorphous and crystalline domains, and between polyelectrolyte and conjugated polymer domains). Where ions and solvent molecule segregate is as important as how many ions there are. Thus, bulk OMIEC composition determination should be paired with investigations of component distribution.