本文件规定 a） 一种测定玻璃颗粒在121°C下耐水解性的方法。该耐水解性为 通过滴定从溶液中提取的碱所需的酸的体积来测量和表示 玻璃的单位质量，也可以用与此相当的氧化钠量表示 酸的体积，b）根据本方法测定的耐水解性对玻璃进行分类 文件 本文件适用于耐腐蚀性更强的玻璃，例如硼硅酸盐玻璃。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This document specifies a) a method for determining the hydrolytic resistance of glass grains at 121 °C. The resistance is measured and expressed by the volume of acid required for titration of the alkali extracted from the unit mass of glass, and can also be expressed by the amount of sodium oxide equivalent to this volume of acid, andb) a classification of glass according to the hydrolytic resistance determined by the method of this document. This document is intended for use on the more resistant types of glass, e.g. borosilicate glass.All current amendments available at time of purchase are included with the purchase of this document.