This book explores methods and tools for monitoring the state of condensed media containing nanostructured components. It offers a comprehensive classification of these techniques and highlights the unique features of controlling media that include nanostructures. The work presents physical and mathematical models of condensed systems, focusing on their structural states, energy flows, and resonance interactions. A series of innovative experimental methodologies for assessing the parameters of nanostructured condensed media has been developed. Among these, an optical resonance method for detecting ultra-trace impurities in pure environments and a resonance conductometric technique for identifying and characterizing carbon nanomaterials are introduced. The book provides experimental results that validate the effectiveness of the proposed models and demonstrate the practicality of the control methods. Additionally, a new approach to designing diagnostic techniques for nanomodified materials and media is proposed, taking into account their interaction processes with measurement systems. This publication is aimed at scientists, postgraduate students, master's students, and undergraduates specializing in physical and chemical sciences, particularly those involved in the development of modern measurement devices, micro- and nanoelectronics.