The article presents tests results of reference materials of composition and properties of coatings. RMs with nickel coating on steel and permalloy coating on silicium are used. Multiparameter RMs are developed.

Metallic uranium certified reference material (CRM) has been developed and certified as State certified reference material and Russian 1 class certified material (according to the RF State Standard 8609-2004) within the State system of accounting and control of nuclear materials. The certified parameter is mass fraction of uranium.

The aim of this study was to develop and validate a gas chromatography methods of quantitative determination of residual organic solvents in substance of 5,7-bis-(meta-nitrophenylamino)-4,6-dinitrobenzofuroxan. Validation of elaborating methods of quantitative determination of residual organic solvents - ethyl alcohol and acetonitrile in substance of 5,7-bis-(meta-nitrophenylamino)-4,6-dinitrobenzofuroxan using gas chromatography method allowed to evaluate their metrology parameters. All parameters of validation characteristics met their acceptance criteria's. Specificity was demonstrated by a complete chromatographic separation of peaks of ethyl alcohol and acetonitrile, and lack of peaks of ethyl alcohol and acetonitrile in the chromatogram of solvent. The linearity was proven in the range of quantitation limit to 120 % of the test concentrations. Precision of the methods comply with the requirement defined - the relative standard deviation for of ethyl alcohol and acetonitrile below 3 %. The results of this validation study prove the suitability of the gas chromatography method for quantitative determination of residual organic solvents in substance of 5,7-bis-(meta-nitrophenylamino)-4,6-dinitrobenzofuroxan.

The aspects of metrological assurance of gas chromatographic analysis of liquefied hydrocarbons are considered, sources of the measurement uncertainty are evaluated.

The article presents the results of research of global trends in the area of reference materials in the following directions: creation of normative documents on RMs, development of RMs, determination of RM metrological characteristics, recognition, approval and use of RMs, informational support of RMs, used in different areas.