1.1 这些做法 2. 包括获得离子交换材料代表性样品的程序。包括以下做法: 小节 实践A——从单个包装中取样 多个包装批次或发货 4. 到 11 规程B——固定床离子交换取样 无限制机房的设备 12 到 16 规程C——固定床离子交换取样 机房受限的设备 17 到 21 1.2 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。 1.3 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 此做法最常用于对从制造商处收到的原装运集装箱中的材料进行取样，并在进行任何树脂处理程序之前进行取样。由于某些离子交换材料由制造商以干燥或自由流动状态提供，而其他离子交换材料则以潮湿状态提供，因此有必要使用两种不同的取样装置。 因此，本规程分为取样程序——干燥或自由流动材料（第节 8. )和取样程序——潮湿材料（第节 9 ). 5.2 一旦获得样品，就有必要保护离子交换材料不受变化的影响。样品应立即放入可密封、透气的容器中。

1.1 These practices 2 cover procedures for obtaining representative samples of ion-exchange materials. The following practices are included: Sections Practice A—Sampling from a Single Package and Multiple Package Lots or Shipments 4 to 11 Practice B—Sampling from Fixed Bed Ion-Exchange Equipment Having Unrestricted Head Room 12 to 16 Practice C—Sampling from Fixed Bed Ion-Exchange Equipment Having Restricted Head Room 17 to 21 1.2 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. 1.3 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 will be used most frequently to sample materials as received from the manufacturer in the original shipping container and prior to any resin-conditioning procedure. Since certain ion-exchange materials are supplied by the manufacturer in the dry or free-flowing state whereas others are supplied moist, it is necessary to employ two different sampling devices. Therefore, this practice is divided into Sampling Procedure—Dry or Free-Flowing Material (Section 8 ), and Sampling Procedure—Moist Material (Section 9 ). 5.2 Once the sample is obtained, it is necessary to protect the ion-exchange materials from changes. Samples should be placed in sealable, gasproof containers immediately.