Iso guide 31 reference materials definition

This Guide is intended to help reference material (RM) producers in preparing clear and concise documentation to accompany an RM. It lists and explains mandatory, recommended and other categories of information to be considered in the preparation of product information sheets and RM certificates. All RM, SRM, CRM materials that are commercially available. Standard Reference Materials® Definitions: 1) ISO Guide 35: 1989 - Certification of reference materials - General and statistical principles. 2) ISO Guide 31: 2000 - Contents of certificates & labels of reference materials. 3) ISO Guide 33: 1989 - Uses of certified reference materials R304 - General Requirements: Accreditation of ISO Guide 34 Reference Material Producers Document Revised: 1/27/2017 Page 2 of 17 L:RequirementsR304 - General Requirements: Accreditation of ISO Guide 34 Reference Material Producers Part A FOREWORD The AMERICAN ASSOCIATION FOR LABORATORY ACCREDITATION (A2LA) is a non- scope: This Guide is intended to help reference material (RM) producers in preparing clear and concise documentation to accompany an RM. It lists and explains mandatory, recommended and other categories of information to be considered in the preparation of product information sheets and RM certificates. terms and definitions, use and production of reference materials and contents of their certificates. 1.2.1 Terms and Definitions used in connection with reference materials (ISO-guide 30; Chapter 2 and 3) 2.1 Reference material (RM):material or substance, one or more of whose property values are sufficiently homogeneous and well established to be This Guide complements ISO Guide 34 by providing detailed descriptions of acceptable approaches for the production of reference materials with reference to the assessment of homogeneity and stability, the characterisation of reference materials, estimating uncertainties of the assigned values and by giving information on how NIST certified reference materials are