A Set of Reference Materials for Verification and Calibration of Universal Chromatographic Instruments

Abstract

Reference materials certified using State primary standards form the basis for ensuring metrological traceability to the corresponding measurement units. The article presents the results of the development of a series of new reference materials for the composition of pure organic substances, intended primarily for calibrating chromatographic equipment with various types of detection.The developed reference materials ensure traceability of the results of verification (calibration) of standards and measuring instruments, as well as measurement results in various areas of state regulation to ensure the uniformity of measurements. Certified values of reference materials were established by an indirect method – t he mass balance method. Metrological traceability of certified values is ensured by direct measurements on the State Primary Standard GET 208. Reference materials are pure substances packaged in glass ampoules (n-dodecane, n-heptane, n-hexadecane, benzene) or vials (hexachlorobenzene, lindane, reserpine, caffeine, glucose, sucrose, anthracene). The mass fraction of the main component of the reference material is in the range from 98.00 to 99.99 %, the relative expanded uncertainty (at k = 2, P = 0.95) does not exceed 0.5 %. The shelf life of reference materials is established by the accelerated aging method and is 3 years under recommended storage conditions.The article is of interest to industry specialists – metrologists, chemists, ecologists who control technological processes in various fields of activity, including the food and chemical industries, environmental protection, and scientific research.The described reference materials are commercially available to all interested parties.This study can provide empirical material for research in the field of serial production of reference materials, which can be used as a basis for the certification of other substances – similar organic substances.