1.1 本规程描述了用于收集液体或污泥样品或两者的取样装置和程序，其上表面可由合适的装置接近。这些装置可用于对具有适当尺寸和位置的取样口的储罐进行取样。 1.2 本规程描述并讨论了以下常用设备的优点和局限性，其中一些设备可用于抓斗和离散深度采样:铲斗、液体抓斗采样器、摆动罐采样器、培根炸弹、凯默勒采样器、离散液位采样器、液体剖面仪、蠕动泵和注射器采样器。 1.3 本规程提供了这些采样器的使用说明。 1.4 本规程不涉及用于收集地下水的取样装置。 1.5 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。 1.6 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 可能需要在液体内的指定深度进行采样，以确认或排除目标群体内的变化。本规程描述了商用抓斗式和离散式深度采样器的设计和操作，供负责设计或实施采样程序的人员使用，或两者兼而有之。 4.2 这些取样装置用于对水箱、池塘、蓄水池和其他开放水体中的液体进行取样。有些可以在采样点的边缘或岸边使用，而有些只能在采样点上方的平台、船或桥梁上使用。所描述的一些装置适用于对浆料和污泥以及悬浮固体很少或没有悬浮固体的水性液体和其他液体进行取样。 4.3 实践 D5743 提供了取样桶、储罐或类似容器的指南。 4.4 本规程不涉及规划废物取样活动的一般指南（指南 D4687 )，制定数据质量目标（实践 D5792 )，监测系统的设计和采集样本数量的确定（实践 D6311 ), 原位 感兴趣参数的测量、数据评估和结果数据的统计解释（指南 D6233 )，样品保存、取样和现场质量保证（指南 D5612 )，或取样位置的选择或获得代表性样品（指南 D6044 ).

1.1 This practice describes sampling devices and procedures for collecting samples of liquids or sludges, or both, whose upper surface can be accessed by the suitable device. These devices may be used to sample tanks that have an appropriately sized and located sampling port. 1.2 This practice describes and discusses the advantages and limitations of the following commonly used equipment, some of which can be used for both grab and discrete depth sampling: dipper, liquid grab sampler, swing jar sampler, Bacon bomb, Kemmerer sampler, discrete level sampler, liquid profiler, peristaltic pump, and the syringe sampler. 1.3 This practice provides instructions on the use of these samplers. 1.4 This practice does not address sampling devices for collecting ground water. 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 Sampling at specified depth(s) within a liquid may be needed to confirm or rule out variations within a target population. This practice describes the design and operation of commercially available grab and discrete depth samplers for persons responsible for designing or implementing sampling programs, or both. 4.2 These sampling devices are used for sampling liquids in tanks, ponds, impoundments, and other open bodies of water. Some may be used from the edge or bank of the sampling site, whereas some can only be used from a platform, boat, or bridge over the sampling site. Some of the devices described are suitable for sampling slurries and sludges as well as aqueous and other liquids with few or no suspended solids. 4.3 Practice D5743 provides guidance for sampling drums, tanks, or similar containers. 4.4 This practice does not address general guidelines for planning waste sampling activities (Guide D4687 ), development of data quality objectives (Practice D5792 ), the design of monitoring systems and determination of the number of samples to collect (Practice D6311 ), in situ measurement of parameters of interest, data assessment, and statistical interpretation of resultant data (Guide D6233 ), sample preservation, sampling and field quality assurance (Guide D5612 ), or the selection of sampling locations or obtaining a representative sample (Guide D6044 ).