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nature : also known as the pH meter. Determination of potential use of the pH value of the equipment. A sophisticated electronic voltmeter. When one pair of electrodes (a glass electrode instructions electrode, a reference electrode such as the saturated calomel electrode) Baptist in the solution, they have the potential margin and the pH value on. Maintain reference electrode potential constant, the instructions with the electrode potential of the pH value changed. Potential changes in the margin and the corresponding pH value, the direct instructions from the meter. Commonly used in the determination of the solution pH.
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