Interlaboratory experiment design in the production of reference materials (ICRM) and statistical processing of the results obtained

Institute for Certified Reference Materials (ICRM) is a leading manufacturer of certified reference materi­als (CRM) for ferrous metallurgy. The entire process of CRM production from the purchase of a material to the certificate issuance takes about two years. The determination of the metrological characteristics is the longest stage of CRM production. The metrological characteristics of reference materials, are evaluated, as a rule, according to the results of an interlaboratory experiment and, in addition, in combination with a comparison method. The interlaboratory experiment arranged by ICRM, involves at least 10 competent analytical laboratories. The interlaboratory comparative tests are also carried out to test the qualification of laboratories. Since 2017, ICRM has been accredited by the Federal Accreditation Service as a profi­ciency provider of interlaboratory comparison.

1. Stepanovskikh V. V. То the 80th anniversary of Russian certified reference materials for ferrous metallurgy and 50th anniversary of The Institute for Certified Reference Materials / Standart. Obraztsy. 2012. N 4. P 5 - 16 [in Russian].

2. Lutsenko A. N., Letov A, E, Karachevtsev F, N. Problematic issues of the development of reference materials of composition and properties for aircraft industry / Standart. Obraztsy. 2016. N 4. P 31 - 41 [in Russian], DOI: 10.20915/2077-1177-2016-0-4-31-41

3. Pliner Yu. L., Sokolova I. V, Vasilevskaya L. V., et al. Metrological assurance of composition control of ferrous metallurgy materials: Handbook. — Moscow: Metallurgiya, 1981. — 248 p. [in Russian],

4. Pliner Yu. L., Vinnik V I., Semenko N. G., et al. Metrological assurance of composition control of ferrous metallurgy materials. Handbook. 2nd edition. — Moscow: Metallurgiya, 1988. — 288 p. [in Russian],

5. MU MO 14-1-9-88. Methodical instructions. Statistical quality control of analytical laboratories of enterprises and organizations of ferrous metallurgy. — Sverdlovsk: Institut standart- nykh obraztsov TsNIIChM, 1988. — 12 p. [in Russian],

6. Pliner Yu. L., Kuzmin I. M. Metrological problems of analytical control the of the metal products quality. — Moscow: Metallurgiya, 1989. — 216 p. [in Russian],

7. Pliner Yu. L., Kuzmin I. M., Pyrina M. P, Stepanovskikh V V Analytical control accuracy of ferrous metals. — Moscow: Metallurgiya, 1994. — 256 p. [in Russian],

8. Shokhina O. S., Sergeeva A. S., Krasheninina M. P. Experience of interlaboratory comparisons on determination of quality indicators for medicines and pharmaceutical sub¬stances I Analytics. 2018. Vol. 8. N 6(431. P 544 - 550 [in Rus¬sian], DOI: 10.22184/2227-572X.2018.08.6.544.550

9. Bogumska I., Stepanovskikh V V, Kolpakova E. K. Part¬icipation of Russian laboratories in Czech proficiency testing scheme for metallurgical analysis laboratories / Standart. Ob¬raztsy. 2011. N 4. P 57 - 63 [in Russian],

10. Ozhogina E. G., Lebedeva M. I., Gorbatova E. A. Interlaboratory comparison tests in mineralogical works I Standartnye Obraztsy. 2017. Vol. 13. N 2. P 37 - 47 [in Russian], DOI: 10.20915/2077-1177-2017-13-2-37-47

11. Adler Yu. P., Butram’eva A. S., Shper V. L. Assessment in an era of changes: is there any use to change? Part 2. Analysis of the results of interlaboratory comparisons / Kontrol’ Kach. Prod. 2019. N 10. P 27 - 35 [in Russian],

12. Recommendation M 20-2010. Standards of accuracy of quantitative chemical analysis of materials of ferrous metallurgy. — Yekaterinburg: ZAO “Institut standartnykh obraztsov”, 2010. — 42 p. [in Russian].