The problem of improving the quality of seriously issued certified reference materials of the composition of gas mixtures

Currently, in the Russian Federation, the metrological traceability of certified reference materials of the composition of gas mixtures in cylinders under pressure produced by manufacturers of certified reference materials is carried out in accordance with GOST 8.578-2014. Considering that certified reference materials of the composition of gas mixtures in cylinders under pressure are used for testing to approye the type of measuring instruments, verification, calibration, and graduation of gas-analytical measuring instruments used to control explosive gases and vapors, harmful components in the atmospheric air and the air of the working area, emissions from vehicles and enterprises, to control technological processes, the quality of hydrocarbon products, etc., the issue of ensuring the quality of seriously produced certified reference materials (about 100.000 cylinders with gas mixtures per year) is important. To ensure the quality of certified reference materials of gas mixtures in cylinders under pressure, mass-produced by manufacturers of certified reference materials, we offer the following actions:

– manufacturers of certified reference materials’ passing of mandatory accreditation for compliance with the requirements of GOST ISO Guide 34–2014 and GOST ISO Guide 35–2015;

– manufacturers of certified reference materials’ constant participation in the proficiency testing programs through interlaboratory tests;

– actualizing and refining the existing set of standards defining the requirements for the entire life cycle of a certified reference material of a gas mixture in a cylinder under pressure;

– improving the method of certification of a reference material by calculating the value of the expanded uncertainty of the reference material and the introducting a new coefficient «technological reserve».

1. GOST 8.578-2014 State system for ensuring the traceability of measurements. State hierarchy scheme for measuring instruments of the content of components in gaseous mediums. Standartinform, Moscow, 2014. (In Russ.).

2. RMG 29–2013 State system for ensuring the uniformity of measurements. Metrology. Basic terms and definitions. Standartinform, Moscow, 2014. (In Russ.).

3. VNIIM, BelGIM (eds) (2010) International Dictionary of Metrology: basic and general concepts and related terms. NGO «Professional» Publ., St. Petersburg, 2010, 81 p. (In Russ.).

4. Federal law «On ensuring the uniformity of measurements» No FZ-102 of 26.06.2008. http://fundmetrology.ru/depository/01_npa/102-fz_2015.pdf. (In Russ.).

5. Decree of the Ministry of Industry and Trade of the Russian Federation No 970 of 25.06.2013 «On approval of the Administrative Regulations on the Federal Agency for Technical Regulation and Metrology providing state services for the type approval of reference materials or measuring instruments», Moscow. http://www.fundmetrology.ru/depository/01_npa/pm1081_30112009.pdf. (In Russ.).

6. Decree of the Ministry of Industry and Trade of the Russian Federation No 1081 of 30.11.2009 «On approval of the procedure for testing reference materials or measuring instruments for the purposes of type approval; the procedure for type approval of reference materials or measuring instruments; the procedure for issuing certificates of reference material or measuring instrument type approval, establishing and changing the validity periods of the above-mentioned certificates and the interval between verifications of measuring instruments, requirements for type approval marks of reference materials or measuring instruments and marking procedure», Moscow. https://rg.ru/2018/11/09/minpromtorg-prikaz3249-site-dok.html. (In Russ.).

7. Decree of the Ministry of Industry and Trade of the Russian Federation No 164 of 03.02.2015 «On approval of the form of type-approval certificates of reference materials or measuring instruments», Moscow. http://base.garant.ru/70981308. (In Russ.).

8. Federal law «On accreditation in national accreditation system» No. 412-FZ of 28.12.2013, Moscow. https:// http:// rg.ru/2013/12/31/akkreditacia-dok.html. (In Russ.).

9. Kolobova A. V. Research and development of methods for metrological control of industrially produced reference materials for the composition of gas mixtures. Dissertation, D. I. Mendeleyev Institute for Metrology (VNIIM), St. Petersburg, 2008. (In Russ.).

10. GOST ISO Guide 34100.3–2017 Uncertainty of measurement. Part 3. Guide to the expression of uncertainty in measurement. Standartinform, Moscow, 2017. (In Russ.).

11. GOST ISO Guide 34–2014 General requirements for the competence of reference material producers. Standartinform, Moscow, 2015. (In Russ.).

12. ГОСТ ISO Guide 35–2015 Стандартные образцы. Общие и статистические принципы сертификации (аттестации). М.: Стандартинформ, 2016. 61 с.

13. ГОСТ ISO/IEC 17043–2013 Оценка соответствия. Основные требования к проведению проверки квалификации. М.: Стандартинформ, 2014. 39 с.