Microfluidic device for electrically regulating the pH of a fluid therein and method of regulating the pH of a fluid in a microfluidic device using the same

Provided is a microfluidic device for electrically regulating the pH of a fluid comprising: a first chamber comprising a first electrode; a second chamber comprising a second electrode; a third chamber comprising a third electrode, a metal ion exchange membrane between the first and second chambers; and a hydrogen ion exchange membrane between the first or second chamber and the third chamber.