Abstract: A method may involve directing a fluid through a fluid path that includes industrial equipment during a phase of a clean-in-place (CIP) process to remove soil from the industrial equipment. The method can include analyzing a turbidity of a bolus of fluid within the fluid path at a first time to provide a first measured turbidity of the bolus of the fluid and at a second time to provide a second measured turbidity of the bolus of the fluid. In some cases, the bolus of the fluid travels through the industrial equipment between the first time and the second time. The method can include determining an end of the phase of the CIP process based on the first measured turbidity and the second measured turbidity, and controlling the CIP process based upon the determined end of the phase.