Research of Cylinders of Domestic Producers for the Purpose of Development and Production of Primary Reference Materials for the Composition of Gas Mixtures Based on Sulfur Dioxide, Hydrogen Sulfide, Carbonyl Sulfide

   Primary reference materials are reference materials for the composition of gas mixtures composition in cylinders under pressure produced on the reference equipment complexes of the State Primary Standard of Units of Mole Fraction, Mass Fraction and Mass Concentration of Components in Gas and Gas Condensate Media GET 154–2019. These primary reference materials (otherwise called transfer standards) are the highest accuracy standards in the Russian Federation. The primary reference materials are designed to transfer the unit of mole fraction of components from GET 154–2019 to secondary and other working standards, high-precision measuring instruments; to ensure the conduct of and participation in international comparisons; to implement the calibration and measurement capabilities of the Russian Federation. It would not be an exaggeration to say that primary reference materials play a key role in the implementation of traceability and metrological support for all gas analytical measurements. To date, primary reference materials were prepared in specialized aluminum cylinders of foreign production, the import of which turned out to be difficult. In order to replace foreign cylinders with cylinders of domestic producers for the production of high-precision gas mixtures, the study described in the article was conducted. The results of the development and production of three typesof reference materials for the composition of gas mixtures based on sulfur dioxide, hydrogen sulfide, carbonyl sulfide in nitrogen diluents gas with standardized accuracy characteristics corresponding to the status of primary standards were published: GSО 12364-2023, GSО 12365-2023, GSО 12366-2023.   The practical significance of the work is to preserve and strengthen the technological sovereignty of the country by developing primary reference materials for the composition of gas mixtures in cylinders of domestic producers and maintaining the functioning of the metrological support system for gas analytical measurements in the absence of cylinders of foreign production.   The research results can be of practical value for cylinder producers interested in improving production technologies.

gas analytical measurements, traceability, primary reference material, reference material, gas mixture, cylinder under pressure, aluminum cylinder, metal composite cylinder, sulfur dioxide, hydrogen sulfide, carbonyl sulfide