1.1 本规程涵盖土工合成材料和轧制侵蚀控制产品（RECP）的三个试验取样程序。本规程要求，土工合成材料的每种试验方法都应包含实验室样品和试样的采集说明。 1.1.1 第一个程序描述了为制造商质量控制（MQC）的目的对生产装置进行采样( 表1 ). 1.1.2 第二个程序描述了为制造商在制造过程中进行质量保证（MQA）测试而对生产装置进行的采样。这要求在制造过程中保留备份统计过程控制记录( 表2 ). 1.1.3 第三个程序描述了将土工合成材料和轧制侵蚀控制产品的装运划分为多个批次，以及为买方规范一致性测试确定批次样本量( 表3 ). 1.2 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。 1.3 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====== 5.1 本规程提供了一种方法，通过该方法可以选择土工合成材料样品，以提供统计上有效的样品，用于选择试样，而无需事先了解生产单元之间可能存在的可变性。 5.2 实践中阐述的原则 D4271 以及该实践中的说明性文本，可供测试方法作者在准备抽样报表时使用。 5.3 本规程给出了三个抽样程序:一个用于制造商质量控制（MQC），一个用于制造商质量保证（MQA）测试，第三个用于买方规范一致性测试。因此，包含要求使用本规程的取样部分的试验方法应在报告部分包含类似于以下内容的声明:“报告实践中的程序 D4354 用于取样:程序A用于制造商质量控制（MQC），程序B用于制造商质量保证（MQA）测试，或程序C用于买方规范一致性测试。 5. 4. 制造商的质量保证在内部进行，以确保制造商的MQC计划。当需要向买方提供质量保证认证时，MQA测试将由外部MQA测试设施进行。

1.1 This practice covers three procedures for the sampling of geosynthetics and rolled erosion control products (RECPs) for testing. This practice requires that instructions on taking laboratory samples and test specimens be part of every test method for geosynthetics. 1.1.1 The first procedure describes the sampling of production units for the purpose of manufacturer's quality control (MQC) ( Table 1 ). 1.1.2 The second procedure describes the sampling of production units for the purpose of manufacturer's quality assurance (MQA) testing during the manufacturing process. This requires that backup statistical process control records be maintained during the manufacturing process ( Table 2 ). 1.1.3 The third procedure describes the division of shipments of geosynthetics and rolled erosion control products into lots and the determination of lot sample size for purchaser's specification conformance testing ( Table 3 ). 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 provides a means by which samples of geosynthetics may be selected to provide a statistically valid sample for the selection of test specimens without previous knowledge of the variability that may exist between production units. 5.2 The principles stated in Practice D4271 , and the illustrative text in that practice, can be used by test method authors in preparing sampling statements. 5.3 This practice gives three procedures for sampling: one for manufacturer's quality control (MQC), one for manufacturer's quality assurance (MQA) testing, and a third for purchaser's specification conformance testing. For this reason, test methods containing a section on sampling that requires the use of this practice should contain a statement in the section on reporting similar to the following: “Report which procedure from Practice D4354 was used for sampling: Procedure A for Manufacturer's Quality Control (MQC), Procedure B for Manufacturer's Quality Assurance (MQA) Testing, or Procedure C for Purchaser's Specification Conformance Testing. 5.4 Manufacturer's quality assurance is done internally to assure the manufacturer of the MQC program. When it is required to provide certification to a purchaser as to quality assurance, the MQA testing is to be done by an external MQA testing facility.