An HP 6890 <a href="https://en.wikipedia.org/wiki/gas_chromatogram" class="extiw" title="en:gas chromatogram">gas chromatogram</a>, coupled to an EI mass spectrometer. This instrument was originally used as a prop in the TV show <i>CSI</i>, where it never ran an actual sample. When the show ended, the machine was sold on eBay, and purchased by the <a href="https://en.wikipedia.org/wiki/Dalhousie_University" class="extiw" title="en:Dalhousie University">Dalhousie University</a> Chemistry Department. Since 2016, the machine is used in the undergraduate analytical lab by students in the third year analytical chemistry course.
<a href="//commons.wikimedia.org/wiki/User:NSEasternShoreChemist" title="User:NSEasternShoreChemist">NSEasternShoreChemist</a>
Taken while touring the undergraduate analytical lab at <a href="//commons.wikimedia.org/w/index.php?title=Dalhousie_University&amp;action=edit&amp;redlink=1" class="new" title="Dalhousie University (page does not exist)">Dalhousie University</a>