... the pH value 2, High precision school equipment in digital lab 1,Range: 0~14 2,Resolution: 0.013 ... the pH value. It has been widely used in chemical, biological, environmentaland many other fields to measure ... the pH of the solution.4,Usage: PH sensor is composed of PH electrode and sensor ... circuit , used to measure PH data of solution. Connect the electrode with the sensor, remove ...