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按ISO指南30和1992年国际标准物质委员会第16次会议批准的定义,标准物质（RM）和有证标准物质（CRM）能使被测量或确定的量值（物理、化学、生物或工程方面的）在不同地区传递,它们广泛应用在校正测量装置、评价分析方法或试验方法,以及测量的长期质量保证。标准物质是具有足够均匀度,并以准确可靠的方法确定了一种或多种特性物料或物质;它们是用于校正计量器具、评价测量方法或确定物质量值的物质。标准物质可以是纯的或混合的气体、液体或固体。有证标准物质是附有证书的标准物质,其中一种或多种特性量值由能溯源于准确体现所示特性量值的单位的程序保证,而且每个标准物质都应有所述置信水平的不确定度。 我国自计量法实施以来,标准物质在科研生产、国民经济、世界贸易中已越来越为人们接受并重视。标准物质是一种具有计量学特征
As defined in the ISO Guide 30 and the 16th meeting of the International Standards Material Committee in 1992, reference materials (RMs) and certified reference materials (CRMs) enable measured or determined quantities (physical, chemical, biological or engineering) ) In different regions, they are widely used in the calibration of measuring devices, evaluation methods or test methods, and measurement of long-term quality assurance. Reference material is of sufficient uniformity to identify one or more characteristic materials or materials in an accurate and reliable manner; they are substances used to correct a measuring instrument, to evaluate a method of measurement, or to determine the value of a substance. The standard material can be pure or mixed gas, liquid or solid. Certified Reference Materials are Certificate-bearing Reference Materials in which the value of one or more characteristics is guaranteed by a procedure traceable to the unit that accurately reflects the magnitude of the indicated characteristic, and each of the Reference Materials shall have the confidence level The uncertainty. Since the implementation of the measurement method in our country, the standard materials have become more and more accepted and valued by the scientific research and production, the national economy and the world trade. The standard substance is a metrological feature