For each trial, a 3L saucepan was placed on a stove and the 500mL measuring cup containing the 100mL of dilute vinegar solution was placed into the saucepan. The saucepan was filled with H2O, ensuring that the water did not overflow into the vinegar solution and until the water level in the saucepan reached just above the solution level in the 500mL measuring cup. A thermometer was inserted into the saucepan and the temperature of the stove adjusted such that the water in the saucepan did not exceed 37 o C. This warm water bath was created in order to allow for homogenous, easy, and safe adjustment of the temperature of the vinegar solution as seen in Fig. .