1.1本规程涵盖使用蠕动泵从多个深度对液体进行采样。它适用于多种流体，包括:高粘度流体、侵蚀性和腐蚀性流体、高纯度溶液和研磨性流体。它特别适用于需要与泵完全隔离的液体取样。 1.2本规程包括确定样品深度、泵设置和收集待分析样品。 1.3本规程无意提供运行蠕动泵的详细说明或建议购买哪种蠕动泵。它指导现场人员如何连接泵和采集样本。 1.4 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和健康实践，并确定监管限制的适用性。 ====意义和用途====== 这种做法可用于取样桶、储罐和类似容器，以及包括小直径（1英寸）在内的取样监测和废物井威尔斯。该泵可以从多个深度采集样本。样品可以是高粘度流体、侵蚀性和腐蚀性流体、高纯度溶液和研磨性流体。泵可用于混合样品（见D 6063 ). 蠕动泵使用真空来运输样品。这种真空可能会导致样品中挥发性有机化合物（VOCs）的一些脱气和损失。当不需要VOC和溶解气体的精确定量数据时，可以使用蠕动泵。 泵为自吸式，干燥运行，无损坏，与泵送流体完全隔离。可以在泵的进气侧或排气侧取样。 蠕动泵的一些其他优点是:泵电机无需去污，泵中的管道是一次性的，易于更换。泵可以轻松启动和停止，并可以在很大的压力和流量范围内泵送液体。 采样的地点、质量和数量、频率和时间取决于要作出的决定（见D 6250） )，抽样设计（见D 6311 )，样品，样品的异质性（见D 5956 )，样品的代表性如何（见D 6044 )，以及由数据质量目标（DQOs）确定的待测试参数（见D 5792） ).

1.1 This practice covers the use of a peristaltic pump for sampling liquids from multiple depths. It is applicable for a wide range of fluids including: high-viscosity fluids, aggressive and corrosive fluids, high-purity solutions and abrasive fluids. It is especially useful for sampling liquids that require complete isolation from the pump. 1.2 This practice includes the determination of sample depth, pump set up and collecting a sample to be analyzed. 1.3 This practice is not intended to give detailed instructions for running a peristaltic pump or recommend which peristaltic pump to purchase. It instructs the field personnel how to connect the pump and collect a sample. 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 and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== This practice can be used in sampling drums, tanks, and similar containers and in sampling monitoring and waste wells including small diameter (1 in.) wells. The pump can collect samples from multiple depths. The samples can be high-viscosity fluids, aggressive and corrosive fluids, high-purity solutions and abrasive fluids. The pump can be used to mix samples (see D 6063 ). Peristaltic pumps use a vacuum to transport the samples. This vacuum may cause some degassing and loss of volatile organic compounds (VOCs) from the sample. When precise quantitative data for VOCs and dissolved gases are not required, peristaltic pumps may be used. The pump is self-priming, runs dry without damage, and is completely isolated from the pumped fluid. A sample can be taken on the intake or discharge side of the pump. Some additional advantages of the peristaltic pump are: decontamination of the pump motor is not necessary and the tubing in the pump is disposable and easy to replace. The pumps can be easily started and stopped and can pump fluids at a wide range of pressures and flow rates. The place, quality and quantity, frequency, and time of sampling is dependent upon the decisions that are to be made (see D 6250 ), sampling design (see D 6311 ), the sample, the heterogeneity of the samples (see D 5956 ), how representative the sample is (see D 6044 ), and the parameters to be tested as determined by the data quality objectives (DQOs) (see D 5792 ).