Some surprising results occur when nearing the boundaries between the flow regimes. Most strikingly, within the intermittent clogging regime, the clogs grow to the largest extent near the boundary with unimpeded flow, as suggested by the largest values of ∆P -∆P 0 , when the component concentrations are lowest. These conditions are farthest removed from the complete clogging regime. In contrast, the smallest intermittent clogs occur at higher component concentrations, closer to the boundaries of complete clogging. This seeming contradiction may be explained by the faster ablation frequency occurring at these higher concentrations.