Nanoparticle suspensions are complex systems and their characterization includes several parameters such as size, concentration in solution, shape, surface charge and chemical composition. Here we provide a list of methods that could be used to characterize nanoparticle suspensions.
The new standard IEC 62961 for the transformer oil quality testing has just been released. In this blog post, the main differences between the old ASTM D971 and the new IEC 62961 standard are discussed.