本文件规定了一种通过测量物理吸附氪气体的量并应用理论多点Brunauer、Emmett和Teller（BET）方法测定橡胶粉末低比表面积的方法。 本文件规定了粉末的具体方法，考虑到为了获得准确的比表面积值，根据代表该批次的样品中的每个颗粒都有同等概率被包括在样品中的原则，对待测材料的代表性样品进行取样。 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 method for the determination of low specific surface area of powders ELTs rubber by measuring the amount of physically adsorbed krypton gas and applying the theoretical multipoint Brunauer, Emmett and Teller (BET) method. This document defines a specific method for powders taking into account that, in order to obtain an accurate value of specific surface area, a representative sample of the material to be tested is taken according to the principle that every particle of the sample that represents the lot have an equal probability of being included in the sample.All current amendments available at time of purchase are included with the purchase of this document.