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…