Analitika

The article is devoted to the domestic line of chromatographs for protein separation Axioma. Examples of application of industrial chromatographs and characteristics of new laboratory chromatographs Axioma Debut and Axioma Standard with the use of domestic critical components are presented. The equipment provides operation in gradient mode using ultraviolet and conductometric detectors. The control is carried out by the domestic
software complex MultiChrom Axioma that allows to expand the functional characteristics of the equipment. The chromatograph Axioma Standard provides operation with pressure up to 100 bar, which makes it possible to use highly efficient columns for proteins separation with small particles and to implement all the main methods of protein separation.

This article provides a critical review of the current state of research on assessing the thermal impact of an electron probe in scanning electron microscopy and electron probe microanalysis. The focus is on theoretical estimates of the superheat temperature of a sample. Two main areas of research are considered. The first area includes studies based on a rigorous solution to the boundary value problem for the differential equation of
heat conduction with a right-hand side that most accurately describes the electron deceleration process in a substance. This area also includes studies using the Monte Carlo method. The second area involves the use of simplified heat generation models, allowing one to obtain analytical expressions for the superheat temperature. Results obtained by various methods are compared.

From October 14 to 16, 2025, the representative and large-scale Scientific and Practical Conference “Russian Scientific Instrument Engineering: Status and Challenges” was held in Chernogolovka. Over 200 participants – scientists, engineers, representatives of universities and research centers, academic and industry institutes – gathered to exchange experiences, establish contacts between scientific and industrial teams, and discuss not only past achievements and current issues, but also the real challenges facing the industry and its development prospects.

This article provides a brief historical overview of the activities of the Exhibition-Collection of High-Purity Substances, established in 1974. It recognizes the outstanding scientists who founded the ExhibitionCollection and played a significant role in organizing its work. The organizations that actively contributed to the expansion of the collection of high-purity substances are listed. The main activities of the ExhibitionCollection are discussed, with the goals of studying the impurity composition as a fundamental characteristic of high-purity substances and monitoring the achieved level of purity in Russia and worldwide. The ExhibitionCollection presents 761 samples of high-purity substances obtained from 149 research and industrial enterprises in Russia and the CIS. The important role of the Information and Calculation System High-Purity Substances and Materials is emphasized. It was created to store and process a large,
ever-growing array of data containing information about the impurity composition of high-purity substances, their properties, production methods, metrological characteristics of the most sensitive analytical methods, as well as information on high-purity substance manufacturers, their product characteristics, regulatory and technical documentation, etc. The current purity level of simple substances produced in Russia and worldwide is compared with the purity level of the best exhibition samples.