Congratulations to Michael Toney, Luca Baiamonte, Dr. William Smith, and Prof. Williams on the publication of their book chapter! The book, Molecular Characterization of Polymers, is available on Elsevier’s website and will be available March 19th. Our contribution is chapter 4, Field Flow Fractionation of Polymers, which outlines the fundamentals of field flow fractionation (FFF) with a focus on asymmetrical flow FFF and thermal FFF.