本文件描述了冶炼级氧化铝的样品制备方法。它涵盖了将1千克到20千克之间的散装样品减少，以产生适合化学和物理分析的样品。生产的缩减样品将代表初始批量样品。散装样品被认为来自一个来源。 这些方法适用于干燥、自由流动的氧化铝。 由于水分含量会影响许多物理分析，该方法旨在尽量减少样品暴露在大气中，以避免吸水。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 describes methods for the sample preparation of smelter-grade aluminium oxide. It covers the reduction of a bulk sample between 1 kg and 20 kg to produce a sample that is suitable for chemical and physical analysis. The reduced sample produced will be representative of the initial bulk sample. The bulk sample is considered to be from one source. The methods are suitable for dry, free-flowing aluminium oxide. As the moisture content will influence many physical analyses, the method aims to minimize the exposure of the sample to the atmosphere to avoid water absorption.All current amendments available at time of purchase are included with the purchase of this document.