Battle of the Burets is a peculiarly St Louis event. Every February, teams (pairs) of high school chemistry students battle to be the best titrators in the region, by determining the normality of an unknown acid solution. All teams compete in preliminary heats, and the top prelim teams face off once more in the final round. In each round, teams have six minutes to arrive at their answer using any information they accumulate within that time period. They may perform a single titration. Or they might perform two or three titrations and either average the results or pick the result that feels right to them.