仓库取样间有不同的目的，例如预确认；交货；批放行测 试；中间过程控制；特殊控制或获得留样。 取样适用于化学和药物生产的所有区域。

取样是质量控制操 作规程的中心环节，一批中所取的样品量虽然很少，但被认 为是批质量的代表，取样计划和取样的实施操作规程是必要 的。 

取样罩作为取样区域的核心设备，它提供一种单向气流, 部分 洁净空气在工作区循环，部分排出至附近区域，使工作区产 生负压，防止交叉污染，用于保证工作区的高洁净度环境。

Warehouse sampling rooms have different purposes, such as pre-confirmation; Delivery of the goods. Batch release test; Intermediate process control; Special control or acquisition of retention samples.

Sampling is applied to all areas of chemical and pharmaceutical production. Sampling is the central part of the quality control operation procedure. Although the number of samples taken in a batch is small, it is considered as the representative of batch quality. Sampling plan and sampling operation procedure are necessary.

As the core equipment of the sampling area, the sampling hood provides a one-way airflow. Part of the clean air circulates in the working area and part of the clean air is discharged to the nearby area to generate negative pressure in the working area and prevent cross pollution, which is used to ensure the high cleanliness of the working area.