Beware of recent phishing e-mails. Use our official contact addresses only.

SIS Online GC Chromatogram and Mass Spectrum Viewer

View GC and GC/MS data files with this free online tool.
netCDF AIA (.cdf) and Agilent ChemStation/MassHunter (.D/ files are supported.
Select file (.cdf or .d/
Tip: right drag to zoom and show spectrum; left drag to unzoom.


This page may not work on older web browsers. HTML5 or above is required. Contact us and send us the data file if there are any problems reading the data file.

See also: To read other GC/MS file formats or perform deconvolution, please download NIST AMDIS (free and included in NIST MS demo). To library search your spectra, see our flagship NIST and Wiley specialty mass spectral libraries.