The solution in the flask must be mixed well throughout the addition of the titrant. Thus, a mixing technique must be selected before beginning a titration. There are two standard methods for mixing the solution:
swirling the flask by hand
placing a magnetic stir bar in the solution and stirring with a magnetic stir plate
With either method of mixing, any solution that splashes onto the side of the flask should be rinsed back into the bulk solution. If any of the solution splashes out of the flask, the titration data should be discarded and another trial should be performed. An Erlenmeyer flask is designed to reduce
the risk of losing solution due to splashing.
