This database is a product of a cooperative effort between Professor Dieter Hummel of the University of Cologne and Sadtler. It includes a wide range of polymers, copolymers, and polymer additives. Structures and physical properties are included. All data was personally reviewed by Professor Hummel and by Sadtler's technical staff using the Sadtler Data Review Protocol. All databases undergo the Sadtler Data Review Protocol to provide you with the highest standard available in spectral data today. These rigorous qualifying procedures start at data acquisition and continue throughout the database development process. All databases are tested in Sadtler laboratories by certified professionals with extensive training in spectroscopy and are validated by outside consultants. Every effort is made to maintain a high standard of accuracy before a spectrum can be placed in a collection.1.) Purity checked by another spectral technique. 2.) Chemical and physical properties listed. 3.) Chemical composition defined. 4.) Chemical structure included. 5.) Sampling technique listed. 6.) Databases created specifically for searching. 1,920 Spectra; Sadtler Product Code: 4222