The Object Of The Contract Is The Acquisition Of A Gas Chromatography System With A Mass Spectrometry Detector, Simple Quadrupol, For The Determination Of The Different Semi -Colored Compounds. The Instrument Must Have Two Injection Channels And A Sampling Introduction System (Robot-Automost Residuation), To Work With Liquid Injection, Solid Phase Micro-Extraction (Spme) On The One Hand And Thermal Disorienting Of Magnetic Bar (Sbse), This System Will Need Pc, Software And Accessories For Its Proper Operation, Which Would Be In The Contract.