“…The evolution of the transmission profiles contains the complete information on the kinetics of any concentration changes due to creaming, sedimentation, flocculation, coalescence or phase separation. Based on these spaceand time-resolved extinction profiles (STEP), demixing phenomena are quantified, including clarification velocity, sedimentation and flotation velocity of particles, residual turbidity, separated phase volume (liquid or solid), sediment consolidation, and dewaterability [27] .…”