1.前言 过程用pH计在各行各业的原材料测定、管理、制造工程中,对反应条件的控制、监视,以及对产品质量的检测等方面起着极其重要的作用。除此而外,为了防止公害,pH计作为排水监测仪表,作用也很大。在这些用途中,最重要的当然是仪表的精度要高,可靠性要好,维修保养要简便。 玻璃电极是目前最好的过程用电极,但 1. Introduction The process of pH meter in all walks of life in the determination of raw materials, management, manufacturing engineering, the reaction conditions control, monitoring, and product quality testing play an extremely important role. In addition, in order to prevent pollution, pH meter as a drainage monitoring instrument, the role is also great. Of these uses, the most important of course is the accuracy of the instrument is higher, the reliability is better, the maintenance should be simple. Glass electrodes are currently the best process electrodes, however