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)

標準物質/標準樣品，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的可追溯性。正因如此，每一個經驗證的數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，其某一種或幾種屬性值表現出充分的均一性，并且可以很好的用于設備的校準，分析方法的評估，或者物質的定植。（ISO Guide 30-1992）

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