Why should you not hhasten the dispensing of the solution by blowing through the mouthpiece in pipetting?

Blowing through the mouthpiece when dispensing a solution can introduce air bubbles, which may lead to inaccuracies in measurement and affect the concentration of the solution. Additionally, this practice can cause contamination of the sample and damage to the pipette tip. Proper technique involves using the pipette's plunger to dispense the liquid smoothly and completely without forcing air through the mouthpiece.