Quantitative Infrared Database

Typical Library Spectrum (below)

(Y-axis in Absorbance) (Wavenumbers in X-axis)

Methane (CH4) Quantitative Spectrum (100 ppm-meters)

in 1 atmosphere pressure of nitrogen at 25 Celsius

Spectra can be expanded (below)

The QASoft Database contains quantitative reference spectra of over 310 vapor phase compounds. Each compound has a spectrum available in four different resolutions, 0.25, 0.5, 1.0, and 2.0 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 to handle potentially dangerous calibration gases. The calibration is inherent in the reference spectra. In analyzing for the 310 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 and Zip disks.

• 310 compounds in four different resolutions
• New quantitative reference spectrum taken upon customer request
• 16 different concentration X pathlength spectra for water vapor
• 12 different concentration X pathlength spectra for carbon dioxide

 Contact us at:

 603 886-5555 Voice    603 386-6399 eFax   afuller@ftir.com