ISO 3951-5:2006规定了按变量逐批检验的顺序抽样计划（方案）系统。根据优选的验收质量限（AQL）值系列对方案进行索引，范围从0.01到10，以不合格项的百分比定义。这些方案旨在适用于连续的一系列地块。 ISO 3951-5:2006设计用于以下条件:检验程序适用于连续系列的离散产品，所有产品均由一个生产商使用一种生产工艺提供； 仅考虑这些产品的单一质量特征，必须在连续范围内进行测量；对于生产过程标准偏差而言，测量系统的不确定度可忽略不计；生产稳定（在统计控制下），且质量特性按照正态分布（或正态分布的近似值）或可在数学上转换为正态分布的分布分布分布；已知质量特性的标准偏差； 如果合同或标准定义了规格上限、规格下限或两者。

ISO 3951-5:2006 specifies a system of sequential sampling plans (schemes) for lot-by-lot inspection by variables. The schemes are indexed in terms of a preferred series of acceptance quality limit (AQL) values, ranging from 0,01 to 10, which are defined in terms of percent nonconforming items. The schemes are designed to be applied to a continuing series of lots. ISO 3951-5:2006 is designed for use under the following conditions: where the inspection procedure is to be applied to a continuing series of lots of discrete products all supplied by one producer using one production process; where only a single quality characteristic of these products is taken into consideration, which must be measurable on a continuous scale; where the uncertainty of the measurement system is negligible with respect to the production process standard deviation; where production is stable (under statistical control) and the quality characteristic is distributed according to a normal distribution (or a close approximation to the normal distribution) or a distribution which may be mathematically transformed to a normal distribution; where the standard deviation of the quality characteristic is known; and where a contract or standard defines an upper specification limit, a lower specification limit or both.