Method for regulating pH value of solution in laboratory

The invention discloses a method for regulating the pH value of a solution in a laboratory. The method comprises the following steps: (1) putting a piece of an adsorbing material in an acidic solution or an alkaline solution for soaking, wherein the acidic solution or the alkaline solution is used for pH value regulation; (2) putting the soaked adsorbing material in a to-be-regulated solution, continuously stirring the solution, carrying out monitoring by use of an acidimeter while stirring, and taking out the adsorbing material when the pH value of the solution meets the regulating requirement; (3) if the requirement for regulating the pH value of the solution cannot be met once, repeating the steps (1 and 2). Through adoption of the method, the pH value of the solution is regulated according to the technology that H or OH gradually enters the solution, and the acidimeter is cooperatively used for monitoring, so that the pH value of the solution can be regulated accurately, and the method is simple and easy to implement.