标准摘要
[中文适用范围]： 用给定体积的预先中和至pH 7.0的氯化钠水溶液处理树脂的测试部分。 搅拌和倾析后，测量玻璃电极和浸入保持在23℃的液体中的参比甘汞电极之间存在的电势差，并读取该差值，直接在pH计刻度上以pH单位表示。 [外文原描述]： Treatment of a test portion of resin with a given volume of an aqueous solution of sodium chloride previous neutralized to pH 7,0. After stirring and decanting, measurement of the potential difference existing between a glass electrode and a reference calomel electrode immersed in the liquid maintained at 23 °C and reading of this difference, expressed in pH units directly on th pH meter scale.
英文名称Plastics — Homopolymer and copolymer resins of vinyl chloride — Determination of pH of aqueous extract