1.1 本规程涵盖了确保液体石油或石油产品的代表性样品从一次样品容器或容器或同时从二者输送到分析仪器或中间容器所需的处理、混合和调节程序。 1.2 附录X1 详细介绍了开发表的背景信息 1用于性能测试。 附录X2 为原油中水的验收测试提供指导。 附录X3 提供样本容器材料指南。 附录X4 提供了推荐混合程序的摘要。 附录X5 提供样本容器/混合系统验收测试流程图。 1.3 有关采样程序，请参阅规程 D4057号 （API MPMS 第8.1）章和 D4177 （API MPMS 第8.2章）。实践 D5842 （API MPMS 第8.4）章涵盖了挥发性测量用轻燃料的采样和处理，以及 D8009 （API MPMS 第8.5章）。 1.4 建议本规程的用户在实践中进行测试 D4177 （API MPMS 第8.2）章）。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户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。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）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》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 需要石油和石油产品的代表性样品来确定用于确定标准体积、价格以及是否符合商业和监管规范的化学和物理性质。从采集样品到分析样品的处理需要小心并努力保持其成分完整性。许多测量点需要高RVP（不稳定）碳氢化合物样品，例如海上生产、测试分离器出口或允许流量计校准。 本规程还描述了与处理和混合承压气瓶内样品相关的要求。 4.2 实践 D4057号 （API MPMS 第8.1章），实践 D4177 （API MPMS 第8.2）章），实践 D5854 （API MPMS 第8.3章），实践 D5842 （API MPMS 第8.4）章）和实践 D8009 （API MPMS 第8.5章）。这套标准的主要目的是确保对监护转移应用进行适当的采样和处理。有许多测试方法可用于分析API中描述的技术采集的样品 MPMS 第8.1和8.2章。对于本规程涵盖的一般保管转移范围以外的试验方法所取的样品，指定取样的人员负责参考试验方法，以获取可能影响取样过程的其他关键信息，即特定容器选择、运输方法、储存时间、，这些要求应在适当的测试方法中找到。

1.1 This practice covers handling, mixing, and conditioning procedures that are required to ensure that a representative sample of the liquid petroleum or petroleum product is delivered from the primary sample container or container or both into the analytical apparatus or into intermediate containers. 1.2 Appendix X1 details the background information on the development of Table 1 used in performance testing. Appendix X2 provides guidance in the acceptance testing for water in crude oil. Appendix X3 provides a guide for materials of sample containers. Appendix X4 provides a summary of recommended mixing procedures. Appendix X5 provides a flow chart for sample container/mixing system acceptance test. 1.3 For sampling procedures, refer to Practices D4057 (API MPMS Chapter 8.1) and D4177 (API MPMS Chapter 8.2). Practice D5842 (API MPMS Chapter 8.4) covers sampling and handling of light fuels for volatility measurement, and D8009 (API MPMS Chapter 8.5). 1.4 It is recommended that the users of this practice perform the tests in Practice D4177 (API MPMS Chapter 8.2) before performing the test in this practice. 1.5 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. 1.6 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 Representative samples of petroleum and petroleum products are required for the determination of chemical and physical properties used to establish standard volumes, prices, and compliance with commercial and regulatory specifications. The handling of samples from the time of collection until they are analyzed requires care and effort to maintain their compositional integrity. Samples of high RVP (unstabilized) hydrocarbons are required at many measurement points, for example offshore production, at the outlets of test separators or to allow calibration of a flowmeter. This practice also describes requirements associated with handling and mixing samples held within pressurized cylinders. 4.2 Practice D4057 (API MPMS Chapter 8.1), Practice D4177 (API MPMS Chapter 8.2), Practice D5854 (API MPMS Chapter 8.3), Practice D5842 (API MPMS Chapter 8.4), and Practice D8009 (API MPMS Chapter 8.5). The primary purpose of this suite of standards, is to ensure proper sampling and handling for custody transfer applications. There are a significant number of test methods that may be used to analyze the samples taken by techniques described in API MPMS Chapter 8.1 and 8.2. For samples that are taken for test methods outside the general scope of custody transfer covered by this practice, the personnel assigned to take the sample are responsible to refer to the test methods for additional critical information that may impact the sampling process, that is, specific container selection, transport methods, storage times, etc. Those requirements should be found in the appropriate test method.