The opposite experiment was carried out to determine settling time, with a stirred slurry of 0.48 M acetaminophen in 50 mL MeCN at room temperature being monitored for the change in turbidity (Figure ). The effect of various stir rates (800, 600, and 400 rpm) on the time to reach complete solid settling was investigated. As expected, lower stir rates gave shorter settling times, and our system was able to detect this change mainly from the turbidity parameter and was supported by other indices (presence of solid and homogeneity -see SI for details). The success of our system's multi-parameter monitoring illustrates its ease of plug-andplay implementation, capturing the global solution behavior in a non-invasive means while remaining simple to implement.