Development of a certified reference material for specific surface area of quartz sand

The paper presents results of conducting research on the development of a certified reference material (CRM) for specific surface area of quartz sand, which is practically non-porous and therefore has low specific surface area value ~ 0.8 m²/g. The standard uncertainty due to RM inhomogeneity, the standard uncertainty due to RM instability, as well as the standard uncertainty due to characterization were estimated using the State Primary Standard GET 210‑2014 for Units of Specific Absorption of Gases, Specific Surface Area, Specific Volume, and Pore Size of Solid Substances and Materials. The metrological characteristics of the CRM were determined using a low-temperature gas adsorption method. Krypton was used as an adsorbate to increase measurement accuracy.

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