Presenting the latest findings in the field, this second edition of a reference on technologies that assist in determination of molecular weight and molecular weight distributions of polymers contains six new chapters covering high-speed size exclusion chromatography (SEC), SEC of low molecular weight materials, and techniques such as two-dimensional liquid chromatography and high osmotic pressure chromatography. Some techniques described include SEC of asphalts, molar mass and size distribution of lignins, and semirigid polymer gels for SEC. The book will be useful for producers and users of polymeric materials. Wu is a member of the American Chemical Society and the North American Thermal Analysis Society.