Characteristics, category and function of certified reference materials are introduced.

介绍了标准物质的特点 、 分类及作用.

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The candidate choice and preparation requirements of certified reference materials are introduced.

介绍标准物质候选物的选择与标准物质的制备要求.

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The requirement and procedure for the certification of certified reference materials are introduced.

介绍标准物质定值的要求和过程.

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The inspection and assessment for the stability of certified reference materials are introduced.

介绍标准物质的稳定性监测及评价.

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The Metallurgical Certified Reference Materials ( M - CRMs ) is a kind of special industrial product.

冶金 标准样品 是一类特殊的工业产品.

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