标准编号：ISO 25337:2010
中文名称：塑料 产品质量控制 使用单次测量的统计方法
英文名称：Plastics — Production quality control — Statistical method for using single measurements
发布日期：2010-03
标准范围
This International Standard describes a statistical, so-called single-measurement, model (SD model) for usingsingle measurements for production quality control purposes at a producer's manufacturing site, even if astandard test method specifies replicate measurements. The statistical model is also applicable to testmethods which call for repeated operations. A general approach to the precision statement in test methodstandards which produce numerical results is also described. The statistical model is only applicable to testmethods which give results that follow a normal (i.e. Gaussian) distribution.The principle of the statistical model is based on the determination of upper and lower production limits, takinginto account the accuracy and the reproducibility of the test method, the latter being added to the productionlimits in order to define an area outside the production limits in which a test result can fall owing to the natureof the production process and/or the test method.This International Standard is designed for project managers, heads of laboratories and production managers.However, the support of a statistician is highly recommended, and sometimes indispensable, for providing thenecessary technical backup and statistical analysis.If this International Standard is used in combination with a test method standard, this needs to be clearlyindicated in all relevant documents, e.g. product specifications, production process specifications and contracts.
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