This classic tool removes solvent or matrix interference. The manual advises:

: Instructions for connecting the spectrometer, turning on accessories (like gas chromatographs or microscopes), and completing diagnostic routines.

To run Omnic 9, your computer must meet the following system requirements:

The background spectrum accounts for atmospheric water vapor and CO₂.

Most Omnic 9 installations came with a disc labeled "Documentation." The manual is often in the /Docs or /Manuals folder as a PDF. If you have the CD, insert it and search for *guide*.pdf or *omnic*.pdf .