测定溶液pH的方法有比色法和电位法两种。比色法简单,可是缺点多,实际应用没有电位法广;电位法中可采用的电极有氢电极、醌氢醌电极、玻璃电极等。虽然它们各有优缺点,但以后者为佳,尤其是在生化工作中是一件不可少的工具, Determination of the pH of the solution are colorimetric and potentiometric two. Colorimetric method is simple, but the disadvantages of many, there is no wide potential application; potential method can be used in the electrode hydrogen electrode, quinhydrone electrode, glass electrode. Although they have their own advantages and disadvantages, the latter is better, especially in biochemical work is an indispensable tool,