ISO 1264:1980 塑料.氯乙烯的均聚物和共聚物树脂.水萃物的pH值测定

标准编号：ISO 1264:1980

中文名称：塑料.氯乙烯的均聚物和共聚物树脂.水萃物的pH值测定

英文名称：Plastics — Homopolymer and copolymer resins of vinyl chloride — Determination of pH of aqueous extract

发布日期：1980-11

标准范围

用给定体积的氯化钠水溶液处理试验部分的树脂，之前中和至pH 7,0。搅拌和倾析后，测量浸泡在23°C液体中的玻璃电极和参比甘汞电极之间的电位差，并读取该差值，以pH计刻度上的pH单位直接表示。

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.

标准预览图