[Edit]
A stirring rod is placed above a beaker to help guide the liquid while pouring and provide better control for the person pouring the liquid. Also it does make missing the small funnel harder, and thus reduces the errors of losing filtrate or introducing uncertainties.
First answer by Rosencrantz. Last edit by Rosencrantz. Contributor trust: 125 [recommend contributor]. Question popularity: 1 [recommend question]





