ISO 28593:2017规定了按属性逐批检验的单次抽样方案体系。当前系统的所有抽样计划均为“零接受”形式，即如果样本中包含一个或多个不合格项，则不接受任何批次。方案取决于适当定义的平均输出质量限制（AOQL），其值由用户选择；对AOQL值的选择或系列中连续批次的大小没有限制。该方法确保总体平均质量达到客户或市场- 从长远来看，place不会超过AOQL。

ISO 28593:2017 specifies a system of single sampling schemes for lot-by-lot inspection by attributes. All the sampling plans of the present system are of accept-zero form, i.e. no lot is accepted if the sample from it contains one or more nonconforming items. The schemes depend on a suitably-defined average outgoing quality limit (AOQL), the value of which is chosen by the user; no restrictions are placed on the choice of the value of the AOQL or on the sizes of successive lots in the series. The methodology ensures that the overall average quality reaching the customer or market-place will not exceed the AOQL in the long run.