Agilent 6890N GC
Agilent Technologies - Model 6890N Gas Chromatograph Mainframe
Agilent Technologies - Model G1560A Split/Splitless Inlets with EPC
Agilent Technologies - 6890 opt. 211 Flame Ionization Detector (FID)
Agilent Technologies - Electron Capture Detector - G2397A (Micro-ECD)
Refurbished 6890N FID uECD Gas Chromatograph System comes complete with 7683 ALS
Agilent Technologies - Model 7683 ALS Automatic Liquid Sampler Autoinjector (G2613A)
Agilent Technologies - Model 7683 ALS Automatic Liquid Sampler Tray (G2614A)
Our rebuilt 6890N GC Systems include the following Chemstation Data System
Computer - Intel Pentium Dual-core 3 MB Cache G20303 GHz Processor, 24X DVD Burner, SATA Dual WD Caviar Blue 500GB Internal SATA Hard Drive, 2GBRAM - Brand New
Agilent Technologies - Part No. 82350A - PCA/PCIGPIB Card
Microsoft - Windows XP License
Agilent Technologies - G2070AA GC ChemStation
Monitor - 19 inch Flat Panel Display 1280 x 1024 (NEW)
Other options are available upon request including: additional injection port and autosampler tower.
Our website is intended to be a catalog of system configurations based on our common inventory items. We can custom configure any system to meet your specific requirements.
Analytical Instrument Management offers quality custom configured, refurbished Agilent and HP 6890 Gas Chromatograph Systems. All of our systems are completely refurbished, rigorously tested and guaranteed to meet manufactures specifications. Our customers are supplied with a comprehensive data report detailing the instrument performance prior to shipping.
Agilent GC systems are known for their reliability, ruggedness, and long life. The Agilent 6890 is a state-of-the art gas chromatograph that provides superior performance for all applications. Key to its performance is the use of advanced electronic pneumatic control (EPC) modules and high performance temperature control. Each EPC unit is optimized for its intended use with a specific inlet and detector option. Temperature control of the 6890 oven allows for fast and precise temperature ramping. Overall thermal performance provides optimal chromatography including peak symmetry, retention time repeatability, and retention index accuracy. The combination of precise pneumatic control and accurate temperature control leads to outstanding retention time repeatability, the basis for all chromatographic measurement.
Agilent 6890 Flame Ionization Detector (FID)
• Designed for maximum sensitivity and ease of use, the most popular and versatile detector
• Flame that can be ignited from keyboard or automatically
• Full digital linear dynamic range (107) in a single run
The operation of the Agilent 6890 FID is based on the detection of ions formed during combustion of organic compounds in a hydrogen flame. The generation of these ions is proportional to the concentration of organic species in the sample gas stream. Hydrocarbons generally have molar response factors that are equal to number of carbon atoms in their molecule, while oxygenates and other species that contain heteroatoms tend to have a lower response factor. Carbon monoxide and carbon dioxide are not detectable by FID.
Agilent 6890 Electron Capture Detector (uECD)
• Micro ECD designed for better linearity, sensitivity and reduced susceptibility to contamination
• Nickel plating on the inner surface of the lower cell body to reduce adsorption and degradation of sensitive compounds
• Anode purge to extend cell lifetime
The Agilent 6890 electron capture detector, or ECD, is used for detecting electron-absorbing components (high electronegativity) such as halogenal compounds in the output stream of a gas chromatograph. The ECD uses a radioactive beta particle (electron) emitter in conjunction with a so-called makeup gas flowing through the detector chamber. The electron emitter typically consists of a metal foil holding 10 millicuries (370 MBq) of the radionuclide Nickel 63. Nitrogen is used as makeup gas, because it exhibits low excitation energy, so it is easy to remove an electron from a nitrogen molecule. The electrons emitted from the electron emitter collide with the molecules of the makeup gas, resulting in many more free electrons. The electrons are accelerated towards a positively charged anode, generating a current. There is therefore always a background signal present in the chromatogram. As the sample is carried into the detector by the carrier gas, electron absorbing analyte molecules capture electrons and thereby reduce the current between the collector anode and a cathode. The analyte concentration is thus proportional to the degree of electron capture. ECD detectors are particularly sensitive to halogens, organometallic compounds, nitriles, or nitro compounds.