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Agilent 7890A GC System

Agilent 7890A GC System

We use Agilent’s 7890A GC system to analyze low molecular weight linear organic solvents. This analytical GC system with its faster oven cooling and backflushing system, allows shorter sample analysis time in a cost effective manner. It is designed with capillary flow technology that allows leak-free, in-oven connections at high temperatures. Major components of the GC system include. 1) Autosampler 2) Split/Splitless inlet 3) Column Oven 4) Flame Ionization Detector and Thermal Conductivity Detector. Different parameters can be adjusted by either manually, using the control panel on the GC system, or by using Agilent’s chemstation software.

Major Components and their functions:
  1. 7683 Autoinjector Module - http://www.chem.agilent.com/Scripts/PDS.asp?lPage=165
    Agilent’s 7683 autosampler can accommodate 100 vials (2ml) and injection volumes range from 0.1 – 50ul.
  2. Split/Splitless inlet (S/SL)- http://www.chem.agilent.com/temp/rad0AC02/00000205.PDF
    Our Agilent 7890A GC system is equipped with S/SL inlet, suitable for all capillary columns. Splitless mode allows analysis of compounds present in trace, where as split ratio avoids column overload.
  3. Column Oven – Oven’s temperature can range from +4oC to +450oC. It has a maximum achievable temperature ramp rate of 120oC/min and oven cool down rate of 400oC in 4 min.
  4. Flame Ionization (FID) and Thermal Conductivity (TCD) Detectors – FID detector is best applicable to analyze organic compounds. FID detects ions produced from flammable organic compounds, when they pass through the FIDs flame. TCD detects most of the compounds including linear organic compounds that we are interested in. TCDs detection is based on the changes in thermal conductivity of column effluents.


Protocol: To access most commonly used Papoutsakis’s lab protocol click here to download (Includes parameter settings and column details).

Note: For Further details contact Dinesh Indurthi .