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ISO GUIDE 30-2015 pdf free
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ISO GUIDE 30-2015 pdf free.Reference materials – Selected terms and definitions.
This Guide recommends terms and definitions that should be used in connection with reference materials, with a particular emphasis on terms that are used in reference material product information sheets, certificates and corresponding certification reports.
2 Terms and definitions
2.1 Terms related to materials
2.1.1 reference material RM material, sufficiently homogeneous and stable with respect to one or more specified properties, which has been established to be fit for its intended use in a measurement process
Note I to entry: RM is a generic term.
Note 2 to entry: Properties can be quantitative or qualitative. e.g. identity of substances or species.
Note 3 to entry: Uses may include the calibration of a measurement system, assessment of a measurement procedure, assigning values to other materials, and quality control.
Note 4 to entry: ISO/I EC Guide 99:2007111 has an analogous definition (5.13), but restricts the term “measurement” to apply to quantitative values. However, Note 3 of ISO/IEC Guide 99:2007, 5.13 (VIM), specifically includes qualitative properties, called nominal properties”.
2.1.2 certified reference material CRM reference material (RM) characterized by a metrologically valid procedure for one or more specified properties, accompanied by an RM certificate that provides the value of the specified property, its associated uncertainty, and a statement of metrological traceability
Note 1 to entry: The concept of value includes a nominal property or a qualitative attribute such as identity or sequence. Uncertainties for such attributes may be expressed as probabilities or levels of confidence
Note 2 to entry: Metrologically valid procedures for the production and certification of FtMs are given in, among others, ISO Guides 34121 and 35131.
Note 3 to entry: ISO Guide 31141 gives guidance on the contents of RM certificates. Note 4 to entry: ISO/IEC Guide 99:2007111 has an analogous definition (5.14).
2,1.3 candidate reference material material, intended to be produced as a reference material (RM)
Note 1 to entry: A candidate material has yet to be characterized and tested to ensure that it is fit for use in a measurement process. To become an RM, a candidate material needs to be investigated to determine if It is sufficiently homogeneous and stable with respect to one or more specified properties, and is fit for its intended use in the development of measurement and test methods that target those properties.
2.14 matrix reference material reference material that is characteristic of a real sample EXAMPLE Soil, drinking water, metal alloys, blood.
Note 1 to entry: Matrix reference materials may be obtained directly From biological, environmental or industrial sources.
Note 2 to entry: Matrix reference materials may also be prepared by spiking the component(s) of interest into an existing material.
Note 3 to entry: A chemical substance dissolved in a pure solvent is not a matrix material.
Note 4 to entry: Matrix materials are intended to be used in conjunction with the analysis of real samples of the
same or a similar matrix.
2.1.5 primary measurement standard measurement standard that is designated or widely acknowledged as having the highest metrological qualities and whose property value is accepted without reference to other standards of the same property or quantity, within a specified context
Note I to entry: See also ISO/IEC Guide 99:2007,111
2.1.6 secondary measurement standard measurement standard whose property value is assigned by comparison with a primary measurement standard of the same property or quantity
Note Ito entry: See also ISO/IEC Guide 99:2007,111
2.1.7 sample portion (amount) of material taken from a batch.ISO GUIDE 30 pdf download.


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