Overview

Specifications

  • Spectral selection by common chemical name or CAS number
  • Spectral resolution 0.112 cm-1 at full width, half maximum height (FWHM)
  • Includes chemical formula, molecular weight (grams/mole), freezing and boiling point (oC) and vapor pressure (mm Hg at 25 oC)
  • Display full spectrum (typically 600 to 6,500 cm-1) or user selected range by dragging cursor/finger or entering values by keyboard
  • Switch between Wavenumbers and Wavelength (microns)
  • Instantly see integrated cross-section of displayed spectrum (cm*molecule-1)
  • De-resolve spectra by convolving with Gaussian filter (0.5 to 50 cm-1 FWHM)
  • Change concentration (parts per million) and path length (meter)
  • Display spectra in absorbance or transmittance
  • Display absorbance in base-10 or base-e
  • Display and save spectra as low-to-high or high-to-low wavenumber/microns
  • Save entire or selected portion of spectrum, as plain text file

Examples

Absorption spectrum of of hydrogen iodide, 1-ppm-meter. The red bar indicates area to be zoomed.
The zoomed area of the P- and R-branches of hydrogen iodide.
Absorption spectrum of hydrogen chloride with the two isotopes of chlorine (35 & 37) clearly visible.
Transmission spectrum of carbon dioxide at a concentration of 600 ppm, over a one-meter path. Note that the spectrum has been convolved with a 2 wavenumber Gaussian filter. See below image for example of saved file corresponding to above carbon dioxide transmission spectrum.