Spectra include permanent gases, as well as vapors of volatile liquids which are frequently encountered in the laboratory and in process plants. Many of the compounds are subjected to standards established by Federal legislation. Each compound is identified by its commercial or trade name. 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. 150 Spectra; Sadtler Product Code: 4205