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                  | Standard and/or project under the direct responsibility of ISO/TC 334 Secretariat | Stage | ICS | 
|---|---|---|
| 
                           Reference materials — Selected terms and definitions 
                           | 
                        90.92 | |
| 
                           Reference materials — Contents of certificates, labels and accompanying documentation 
                           | 
                        95.99 | |
| 
                           Reference materials —  Good practice in using reference materials 
                           | 
                        95.99 | |
| 
                           Reference materials — Guidance for characterization and assessment of homogeneity and stability 
                           | 
                        95.99 | |
| 
                           Reference materials - Examples of reference materials for qualitative properties 
                           | 
                        90.93 | |
| 
                           Guidance for the in-house preparation of quality control materials (QCMs) 
                           | 
                        95.99 | |
| 
                           Reference materials — Guidance on, and keywords used for, RM categorization 
                           | 
                        90.93 | |
| 
                           Global distribution of reference materials 
                           | 
                        90.93 | |
| 
                           Reference materials — Establishing and expressing metrological traceability of quantity values assigned to reference materials 
                           | 
                        90.93 | |
| 
                           Reference materials — Selected terms and definitions 
                           | 
                        30.98 | |
| 
                           Reference materials — Selected terms and definitions 
                           | 
                        40.20 | |
| 
                           Reference materials — Contents of certificates, labels and accompanying documentation 
                           | 
                        60.60 | |
| 
                           Good practice in reference material preparation 
                           | 
                        60.60 | |
| 
                           Reference materials — Requirements and recommendations for use 
                           | 
                        60.60 | |
| 
                           Reference materials — Approaches for characterization and assessment of homogeneity and stability 
                           | 
                        60.60 | |
| 
                           Approaches for the production of reference materials with qualitative properties 
                           | 
                        60.60 | |
| 
                           Guidance for the production of pure organic substance certified reference materials 
                           | 
                        60.60 | |
| 
                           Guidance for the production of pure inorganic substance certified reference materials 
                           | 
                        40.60 | 
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