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ISO GUIDE 33:2015(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical Guidance for the in-house preparation of quality control materials (QCMs) Angelique Botha NMISA . ISO Guide 33 on uses of RMs 6 Steps in the in-house preparation of quality control materials The fundamental purpose of QCMs is to detect Reference materials -- Contents of certificates, labels and accompanying documentation ISO/Guide 31:2015 is intended to help reference material (RM) producers in preparing clear and concise documentation to accompany an RM. ISO Guide 33:2015 describes good practice in using reference materials (RMs), and certified reference materials (CRMs) in particular, in measurement processes. These uses include the assessment of precision and trueness of measurement methods, quality control, assigning values to materials, calibration, and the establishment of conventional scales. NIST Quality Manual for Measurement Services . QM-I . Version . Version initiation date . Author Approval Pages Filename 7 08/09/2011 RLW/JKO PDG 2 of 42 NIST-QM-I-V7-Controlled.doc . ISO Guide 33:2000 Uses of certified reference materials . ISO Guide 33 (2015) Reference materials—good practice in using reference materials Jan 1997 ISO Guide 32 (1997) Calibration in analytical chemistry and use of certified reference materials, 1st edn. bs iso guide 80 - guidance for in-house production of reference materials for quality control (qcms) iso 14595 : 2014 : microbeam analysis - electron probe microanalysis - guidelines for the specification of certifie