ISO 1264:1980-塑料制品；氯乙烯均聚物和共聚物树脂——水提取物pH值的测定 -国家数字标准馆

现行 ISO 1264:1980

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Plastics — Homopolymer and copolymer resins of vinyl chloride — Determination of pH of aqueous extract 塑料制品；氯乙烯均聚物和共聚物树脂——水提取物pH值的测定

发布日期： 1980-11-01

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.

分类信息

发布单位或类别：国际组织-国际标准化组织

ICS分类： 83.080.20塑料 - 热塑性塑料

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研制信息

归口单位： ISO/TC 61/SC 9

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