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When designing future experiments in process controller, it is important to consider these residence times when determining the ramp time. (Please come up with a criteria that you will be using in the theory to do this.)In order to determine the ramp state time that should be used (it should be minimized to reduce potential error with the apparatus), a successful experiment needs to be completed. We are currently working to collect data for a successful run. The ratio of the experiment time to the residence time in the tube settler and the effluent turbidimeter will be applied to the residence times for all plate settler spacings to determine the best ramp time to be used.