1.1 This practice is designed to help reference material (RM) producers, who serve the metals and mining industries, to prepare clear and concise documentation to accompany an RM or a certified reference material (CRM). It lists and explains mandatory, recommended, and optional information to be used in preparation of certificates of analysis for CRMs and product information documents for RMs. 1.2 This practice provides guidance for the minimum requirements for a label attached to the CRM/RM unit or unit container and the package containing the unit or unit container. 1.3 This practice provides guidance for calculation of consensus values and uncertainty estimates for CRMs and RMs with examples of approaches commonly used by national metrology institutes. 1.4 Units--The values stated in SI units are to be regarded as the standard, whenever applicable. Values can be traceable to other higher-order reference systems, including Rockwell Hardness, pH, and other systems defined by an international standard or peer-reviewed publication. 1.5 This standard does not purport to address safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use.
Keywordsquality system; validation; traceability; chemical metrology; certified reference materials; reference materials; certificate of analysis; consensus calculation; uncertainty estimate; chemical metrology; metals; alloys; ores; minerals; concentrates
The metals and mining industries need their own, specific practices and guidance for development and value assignment of reference materials, because ISO 17034 and the Guide 30 series do not provide detailed procedures to enable reference materials producers, who support these industries, to develop and market RMs that are of sufficiently high quality to meet industry needs for test method validation. Numerous RM products do not provide the information needed, and the approaches taken by RM producers to documentation are diverging at an increasing rate. Many certificates of analysis contain confusing and even incorrect language and information. Reference material producer members of Committee E01 support this activity. They will use the practice to improve their products and associated documentation. Industry laboratories will get better values and uncertainty estimates to improve the accuracy of test methods. They will also get more consistent language and definitions for the contents of Rm documents. Quality system accreditation activities will become more consistent and better targeted to chemical metrology, saving everyone time and money.
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
Draft Under Development