1.1 该实践涵盖了从主要为液体的多相样品中生成均匀的混合物或乳液，以方便样品制备、转移和分析。 1.2 这种做法旨在使多相流体样品保持乳化/悬浮状态足够长的时间，以采集代表整个样品的单个复合样品。样品在静置后可能会重新形成多层。 1.3 按照此做法产生的乳液/悬浮液只能用于为整个样品设计的分析程序，以及不受乳化剂或乳液/悬浮剂存在显著影响的程序。 1.4 此做法假设已获得不超过1L的代表性样本。 1.5 以国际单位制表示的值应被视为标准值。本标准不包括其他计量单位。 1.6 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 =====意义和用途====== 5.1 这种做法旨在解决从异质样品中获得可重复测试结果的困难。 5.2 这种做法最适合多层液体，但也可以应用于具有足够小的固体颗粒的样品，这些颗粒可以悬浮在乳液中。 5.3 乳化/悬浮样品可用于所有散装性能测试，如微波消解/电感耦合氩等离子体（ICAP）、离子色谱、燃烧热、灰分含量、水、非挥发性残留物和pH值。在某些类型的分析中，保留一部分样品的原始多相形式可能是明智的。

1.1 This practice covers the generation of a uniform mixture or emulsion from multiphase samples which are primarily liquid in order to facilitate sample preparation, transfer, and analysis. 1.2 This practice is designed to keep a multiphase fluid sample in an emulsified/suspended state long enough to take a single, composite sample that is representative of the sample as a whole. The sample may reform multiple layers after standing. 1.3 The emulsion/suspension generated by following this practice can be used only for analytical procedures designed for the total sample and procedures not significantly affected by the emulsifier or the presence of an emulsion/suspension. 1.4 This practice assumes that a representative sample of not more than 1 L has been obtained. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 This practice is intended as a solution to the difficulty of obtaining reproducible test results from heterogeneous samples. 5.2 This practice works best with multilayered liquids, but can also be applied to samples with solid particles that are sufficiently small in size to be suspended in an emulsion. 5.3 The emulsified/suspended sample can be used for all bulk property testing such as microwave digestion/inductively coupled argon plasma (ICAP), ion chromatography, heat of combustion, ash content, water, nonvolatile residue, and pH. It may be prudent to retain a portion of the sample in its original, multiphase form for some types of analyses.