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Instrument Database:
Varian Inc. (Part A) - 3900 Gas Chromatograph
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| Year of introduction |
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| Status |
historical ( out of sale ) |
| Company |
Varian Inc. (Part A)
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| Categories |
Chromatography: GC
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The 3900 GC is an easy-to-use, high-throughput GC designed to meet the requirements of the routine analytical laboratory. It is a single channel, fixed configuration GC incorporating the same outstanding electronic flow control (EFC), injector, detector and autosampler as the full-featured Varian CP-3800 GC. - Small footprint (12.5inch/32 cm) saves precious bench space
- Intuitive, icon-based keypad simplified operation
- Compact and efficient Column Oven uses standard 7 in./17.5 cm diameter capillary columns, heats fast and cools down from 450°C to 50°C in only 5.2 minutes!
- Full EFC control of injectors and detectors.
- Roll-back cover provides complete and easy access to both the injector and detector for routine maintenance.
- Choice of the CP-1177 isothermal split/splitless injector or the 1041 on-column megabore/packed injector.
- Choice of a gas sampling valve or a liquid sampling valve upstream of the liquid injector.
- Choice of FID or TCD.
- Choice of the complete line of Varian autosamplers.
- It is fully functional as a standalone GC or controlled through the Varian Star Workstation or the Galaxie Chromatography Data System
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| Specifications |
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3900 GC Specifications Dimensions and Weight
Size: 21.8 in./55 cm (h) x 12.5 in./32 cm (w) x 22 in./56 cm (d)
Weight: 59 lbs/26.8 kgEnvironmental Requirements
Humidity (relative): 5% to 95% (without condensation)
Temperature: 10 °C to 35 °CPower Requirements
120 Vac ±10%, 60 Hz ±2%, 11 Amps, 1.3 kilowatt
230 Vac ±15%, 50 Hz ±2%, 6 Amps, 1.3 kilowatt
101 Vac ±10%, 50 or 60 Hz ±2%, 14 Amps, 1.4 kilowattColumn Oven
Size: 9 in./23 cm (w) x 4.5 in./11 cm (d) x 9 in./28 cm (h)
Temperature range: ambient +10 °C to 450 °C; with liquid CO2 option,
-60 °C to 450 °C
Temperature-programmed ramps: 7 ramps with 8 isothermal holds
Maximum temperature ramp rate: 100 °C/min
Cool-down rate: 450 °C to 50 °C in 5.2 min
Temperature setpoint increment: 1 °CCP-1177 Split/Splitless Injector
Maximum temperature: 450 °C
Electronic Flow Control (EFC Type 21)
Pressure range: 0 to 100 psi
Total flow: 500 mL/min at 10 psi
Split range: 1 to 10,000 (column dependent)
Accuracy: ±0.1% psi, 7% nominal flow
Increment: 0.1 psi or 0.1 mL/min
Pressure pulse injection
Gas Saver mode1041 Packed/0.53 mm On-Column Injector
Maximum temperature: 450 °C
EFC Type 24
Pressure range: 0 to 100 psi, 0.1 psi increments
Total flow: 0 to 1500 mL/min depends on set pressure, 1 mL/min increments
Accuracy: ±0.1% psi, 7% nominal flowFID
TCD
Maximum temperature: 450 °C
Detectivity: 300 pg/mL (butane)
Linear dynamic range: 106 (butane)
Filament protection: standard
Automatic bridge balancing: standard
Data acquisition rate: up to 80 Hz
Detector EFC
Two channels: makeup gas and reference gas, non-hydrogen
Flow rate: 0 to 50 mL/min, 1 mL/min increments
Flow accuracy: ±7% setpoint flow Communication
Analog output: 0 to 1V or 0 to 10V, standard
Digital output and PC workstation control: TCP/IP with industrystandard Ethernet 10Base-T (optional)Other Specifications
Powered external events (24V): 2
VFD display: 2 lines, 20 characters per line
International language display: 6
Maximum stored methods with battery protection: 5
Preprogrammed check-out method
Internal autosampler control: standard
Flash ROM memoryOptions
The Varian CP-8400 AutoSampler delivers high-throughput automation for up to 100 samples.
The Varian CP-8410 AutoInjector accommodates 2, 5, and 10 mL sample vials. Maximum temperature: 450 °C
Detectivity: 2 pg C/sec
Linear dynamic range: 107
Flame-out detection and auto re-ignition
Auto-scaling electrometer
Data acquisition rate: up to 80 Hz
Detector EFC
Detector flows: air, 0 to 500 mL/min; hydrogen, 0 to 50 mL/min; make-up 0 to 50 mL/min
Flow accuracy: ±7% setpoint flow
Flow increment: 1 mL/min
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