Methods and means of measurement, testing and control . Part 4 . Methods and means of measuring the composition and properties of substances” by the authors of Divina A. G. and Ponomarev S. In. is an important work that will become an indispensable assistant for specialists in the field of chemistry, physics and engineering sciences . This part of the tutorial is devoted to current methods and tools used to analyze the composition and properties of various substances, which makes it especially valuable for students, graduate students and practitioners. This book explores current approaches to measurement and control that play a key role in research and industry. The authors emphasize the importance of accuracy and reliability of measurements, which is the basis for achieving high results in any field related to chemical and physical processes. The reader will be able to learn about various methods of analysis, such as spectroscopy, chromatography and others, which allow not only to identify the composition of substances, but also to determine their physical and chemical properties. The book will be of particular interest to those who study or work in areas such as chemical technology, materials science, ecology, and biochemistry. Students and teachers of universities, researchers and engineers will find in it useful information that will help in their professional activities. In addition, the manual can attract the attention of those who are interested in new technologies in the field of measurement and control, as the authors share the latest achievements and trends in this field. The topics raised in the book cover a wide range of issues, ranging from the foundations of measurement theory to the practical aspects of applying different methods. The authors emphasize the importance of an interdisciplinary approach that allows the integration of knowledge from different fields for a deeper understanding of the processes occurring in substances. This makes the book not only a training manual, but also a real guide for professionals . The writing style of Divin and Ponomarev is distinguished by clarity and accessibility. They strive to convey complex scientific concepts in a simple and understandable language, which makes the material easy to perceive. The authors use many examples and illustrations, which helps the reader to better digest the information and apply it in practice. This quality makes the book especially valuable for those who are just starting out in the world of science and technology. In addition, it is worth noting that Divin A. G. and Ponomarev S. In. are recognized experts in their field, and their work has already earned respect among professionals Their previous editions also received positive reviews for the high quality of the presentation and the relevance of the material presented. The fourth part of this series continues this tradition, offering readers a unique combination of theory and practice. If you’re looking for a book that will help you better understand measurement and control methods in chemistry and physics, “Methods and Means of Measurement, Testing and Control” Part 4" would be a great choice. It will not only expand your knowledge, but also inspire new research and discoveries. Do not miss the opportunity to get acquainted with this fascinating and useful work, which will become your reliable companion in the world of science and technology.