Reference material, accompanied by a certificate, one or more of whose property values are certified by a procedure, which established its traceability to an accurate realization of the unit in which the property values are expressed, and for which each certified value is accompanied by an uncertainty at a stated level of confidence. (Brammer Standard，BAS，ARMI，etc). (ISO Guide 30-1992)

標(biāo)準(zhǔn)物質(zhì)/標(biāo)準(zhǔn)樣品，附帶分析證書，它的屬性值中的某一項或若干項都是按照某一程序進行驗證的。這一驗證程序建立了這些屬性值在它們所被表述的體系中精確體現(xiàn)的可追溯性。正因如此，每一個經(jīng)驗證的數(shù)值都伴隨著在某一特定的置信水平下的不確定度。（如BS,NIST，BAS，ARMI等）（ISO Guide 30-1992）

Reference Materials（RM）

Materials or substance one or more of whose property values are sufficiently homogeneous and well established to be used for the calibration of an apparatus, the assessment of a measurement method, or for assigning values to materials. （ISO Guide 30-1992）

一種原料或物質(zhì)，其某一種或幾種屬性值表現(xiàn)出充分的均一性，并且可以很好的用于設(shè)備的校準(zhǔn)，分析方法的評估，或者物質(zhì)的定植。（ISO Guide 30-1992）

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