1.1 这些做法涵盖了( 1. )制备用于收集待分析有机成分的水的样品容器，以及( 2. )从样品采集到分析，对此类样品进行保存。 1.2 样品保存实践取决于要进行的具体分析。请参阅第节 9 针对与相应适用的通用和特定成分测试方法一起列出的保存实践。实践中给出了水性油脂的保存方法 D3325 使用本文给出的信息将有可能选择必要的最小数量的样品保存实践，以确保指定用于多重分析的样品的完整性。 有关样品保存的进一步考虑，请参阅 水手册 . 2. 1.3 以国际单位制表示的数值应视为标准。本标准不包括其他计量单位。 1.4 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 有关具体的危险说明，请参阅 6.7 , 6.24 和 8.1.3 . 1.5 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====== 4.1 获得有意义的分析数据需要四个基本步骤:样品容器的准备、取样、样品保存和分析。事实上，这四个基本步骤构成了分析方法，因此不应忽视任何步骤。尽管保存的重要性取决于采样和分析之间的时间，但除非在采样后2小时内完成分析，否则最好保存，通常需要保存。

1.1 These practices cover the various means of ( 1 ) preparing sample containers used for collection of waters to be analyzed for organic constituents and ( 2 ) preservation of such samples from the time of sample collection until the time of analysis. 1.2 The sample preservation practice is dependent upon the specific analysis to be conducted. See Section 9 for preservation practices listed with the corresponding applicable general and specific constituent test method. The preservation method for waterborne oils is given in Practice D3325 . Use of the information given herein will make it possible to choose the minimum number of sample preservation practices necessary to ensure the integrity of a sample designated for multiple analysis. For further considerations of sample preservation, see the Manual on Water . 2 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 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. For specific hazard statements, see 6.7 , 6.24 , and 8.1.3 . 1.5 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 ====== 4.1 There are four basic steps necessary to obtain meaningful analytical data: preparation of the sample container, sampling, sample preservation, and analysis. In fact these four basic steps comprise the analytical method and for this reason no step should be overlooked. Although the significance of preservation is dependent upon the time between sampling and the analysis, unless the analysis is accomplished within 2 h after sampling, preservation is preferred and usually required.