This detailed book presents methods that enable the determination of parameters relevant to phloem research in the most efficient ways, putting plant scientists with access to adequate instrumentation in the position to answer any phloem-related question. The collection explores techniques that have been used for decades, such as tracing phloem transport with carbon isotopes, as well as recent developments, such as esculin-based assays of phloem transport and super-resolution microscopy of phloem proteins. As such, the book presents the state-of-the-art in phloem research and, at the same time, a starting point for the development of new methods that will fill the remaining gaps in the phloem researcher's