Polymers belong to an essential material group with many applications not only for polymer manufacturers but also in physics, chemistry, medicine and engineering techniques. The presented volume is the first part of a book series connecting a complete data collection with short but precise descriptions of the different quantities and their significances. The experimental determination of the physical quantities is given as well as the influence to other physical quantities. This volume helps to choose the best material for all kinds of applications also for those which are not mentioned in polymer material books. It is focused on polymers in solutions and is intended for scientists and researchers who work on practical problems in the polymer field and who are in the need of numerical data on polymer properties.