What action should NOT be taken after a jar test?

The reasoning behind selecting the option regarding not calibrating a pump or motor after conducting a jar test is that this step is not directly related to the evaluation of the jar test results. A jar test is performed to determine the appropriate dosage of coagulants and to observe how different chemicals and their concentrations affect water clarity and quality.

After completing a jar test, the typical actions involve mixing the water sample to ensure homogeneity, recording the findings to maintain accurate documentation of the results for future reference and analysis, and preparing for chemical dosing based on the jar test results to optimize treatment processes.

Calibrating a pump or motor usually occurs during maintenance or before operation and is not an immediate follow-up task associated with the conclusions drawn from a jar test. This step is more involved with the operational readiness of equipment rather than the direct outcomes or data derived from the jar test itself. Therefore, it is essential to focus on interpreting the jar test results and implementing the required actions based on those results instead of equipment calibration at that moment.