Micro GC
Make: Agilent Technologies
Model: Agilent 490 GC(G3581 A) SN: CN19026013
Year of purchase: 2019
Funded by:
Location: Energy Lab
Contact email: energylab@cens.res.in
Under maintenance
  • Configuration: Three analytical GC channels; upgradeable to four
  • Independent control of each analytical channel
  • Pneumatics, including time-based column pressure programming
  • Injector, column, and detector settings
  • Injector: Micro-machined injector with no moving parts
  • Injection volume 1 µL to 10 µL, software-selectable
  • injector heating up to 110 °C, including heated sample transfer line
  • Backflush capability
  • Column oven: Temperature range, up to 180 °C, isothermal
  • Column Chemistry: Channel 1 &2, Molecular Sieve 5A; Channel 3: Poraplot with backflush
  • Detector: Micro-machined Thermal Conductivity Detector (TCD)
  • Dual-channel (sample and reference flow)
  • Internal volume of 200 nL per channel
  • Filaments, three
  • TCD Detection limit: 5 ppm for WCOT capillary columns (CP-Sil 5 CB, CP-Sil 13 CB, CP-Sil 19 CB, and CP-WAX 52 CB) in 4–10 m length;
  • 2 ppm for PLOT columns (Molsieve 5A, PoraPLOT Q, PoraPLOT U, Aluminumoxide, SilicaPLOT)
  • 2 ppm for Micropacked columns (Hayesep, MES);
  • 10 ppm for Micropacked columns (Carboxene)
  • Detection limits are typical for selected components, provided that the proper column length and chromatographic conditions are used.
  • Operating range, TCD
  • Concentration, 1 ppm to 100 % level
  • Linear dynamic range, 106
  • Repeatability < 0.5 % RSD for propane at 1 mol %level for WCOT columns at constant temperature and pressure
  • Carrier gas: He, H2, N2, or Ar, 550 ± 10 kPa (80 ± 1.5 psi) input ;
  • Up to two different types of carrier gases can be used in one instrument;
  • Inlet connection, 3.2 mm (1/8 in) stainless steel compression fitting (Swagelok)
  • Sampling: Sample inlet, 1.6 mm (1/16 in) stainless steel Valco fitting with replaceable 5-µm stainless steel filter
  • Sample conditions, noncondensing gas of 0 °C to 110 °C
  • Maximum sample inlet pressure, 100 kPa (14.5 psi)
  • Software selectable sample pump or continuous flow
  • Relay control for stream selection (extension boards required)
  • Support of multiposition stream selection valves
  • Optional sample inlet can be installed in front or back
  • Communication: Analog input, six signals (0–10 V)
  • LAN (TCP/IP); Serial (RS232) for control of a stream selection valve
  • Webserver, display instrument status on standard internet browser Data handling
  • Software: The 490 Micro GC is controlled by Agilent OpenLAB CDS EZChrom edition and Agilent OpenLAB CDS ChemStation Edition.
  • Natural gas physical properties calculations such as: calorific value, relative density, wobbeindex in accordance with ISO 6976, GPA 2172, and ASTM D3588
  • OpenLab Intelligent reporting provides custom reporting and calculations
  • 19 in Housing for a dual-channel 490 Micro GC Configurable with a wide range of accessories :
  • Stream selection valves; Micro-gasifier • Genie membrane filters • Sample pressure sensors
  • Environmental requirements : Humidity (relative), 0 % to 95 % noncondensing • Temperature, 0 °C to 50 °C • Certified up to 2,000 m above sea level
  • Power requirements: Main power, 90–130 Vac or 180–260 Vac, 50–60 Hz • Output, 12 VDC, maximum 130 W • Power consumption 150 W maximum • Typical value: Dual channel system: 80 W Quad-channel system: 110 W
  • Detection of various gases
  • Catalyst research
  • Efficiency of electrochemical/ photo-catalysis
  • Fuel cell analysis
  • Mine safety analysis
  • Air monitoring
  • Biogas analysis
  • Specialty gas quality control
  • Natural gas, calorific value calculations
  • Refinery gas analysis
Modes Duration (hrs)
Calibration 3 hrs
Gas detection 6 hrs
Sl. No. - Category Fees ( in Rs/- ) + additional 18% GST
01 - Academic Institutes 750 per slot / 3 hrs
03 - External Industry Users 1,500 per slot / 3 hrs
02 - External Industry Partner 1,125 per slot / 3 hrs