Quantitative Infrared Database

CH4 spectrum
The QASoft Database contains quantitative reference spectra of at least 300 vapor phase compounds. Each compound has a spectrum available in two different resolutions, 0.5, and 1.0 cm-1 . This collection is not simply an infrared atlas with spectral information alone ! Each spectrum is presented in absorbance units with a known concentration and path length.This permits the computation of gas concentrations from a unknown sample spectrum without the need for calibration gases. The calibration is inherent in the reference spectra. In analyzing for the 300 compounds the only chemical the user will need to handle is his sample.

Data carried in each reference spectrum header include parameters for performing quantitative analysis using QASoft analysis software. Many of the headers contain parameters describing an important fingerprint band for the specific compound. These bands have been carefully selected by Infrared Analysis, Inc. to minimize interferences with other vapor phase spectra. The QASoft Database is available on CD-ROM.