15-Day
Refurbishment cadence
OEM-Spec
Verified against OEM and published benchmarks; report included.
On-Staff
Solution Scientists
Since 1996
Three decades supporting labs
What you are buying
Most petrochemical, environmental, and food-safety methods call for the capillary GC separations the Agilent 7820A runs. Electronic pneumatic control meters the carrier gas to 0.001 psi; the heated inlet vaporizes the sample and carries it onto the column; the oven programs from 4 to 450°C; the detector measures each compound as it elutes. GenTech rebuilds, plumbs, and tests the inlets, detectors, and flow path. You receive a GC that arrives verified and ready to run your methods.
Every unit moves through the GenTech Certified process. Solution Scientists disassemble and inspect each module, replace all consumables and degraded wear components, then tune and calibrate the instrument and verify performance against OEM and published benchmarks using known reference chemicals. The instrument ships with its verification report. A certified-refurbished system gives you that performance without the capital cost or the lead time of a new purchase.
What Agilent says about this platform
Agilent built the 7820A for small to midsize labs running routine methods. The column oven runs 8°C above ambient to 425°C, a narrower range than Agilent’s larger GC platforms, with 1°C setpoint resolution and ramps to 75°C per minute. Electronic pneumatic control holds pressure to a setpoint resolution of 0.01 psi. Agilent rates retention time repeatability under 0.06 percent and peak area repeatability under 2 percent. The system holds two inlets and up to two detectors, with a single-quadrupole mass spectrometer available as a detector option. A digital display with run and ready indicator lights and an audio alarm reports status at the bench. LAN connectivity and remote start and stop integrate the 7820A into an existing lab network. Agilent positions the 7820A as an older platform than the 8890 and 8860; it does not carry their browser-based diagnostics or fleet-monitoring features.
What each component does
Inlet
A split/splitless or multimode inlet vaporizes the sample and delivers it to the column under electronic pneumatic control.
Column oven
Programs from 4 to 450°C with multi-ramp temperature control and fast cool-down for routine throughput.
Electronic pneumatic control
Meters carrier and detector gases precisely, which holds retention times steady run to run.
Detectors
Up to two detectors matched to the method: FID, TCD, micro-ECD, NPD, or FPD.
| In this system | |
| Agilent 7820 GC G4350A | Verified |
| 5975C MSD G3171A | Verified |
| 7683B Autosampler G2614A | Verified |
| Optional Inlets Optional Detectors | Verified |
|
Workstation loaded with software
|
Included |
| Each component is individually serialized and performance-verified before the system is assembled and tested as a complete system. | |
Technical detail
| Oven range | 8°C to 450°C |
| Setpoint resolution | 1°C |
| Max ramp rate | 75°C/min |
| EPC resolution | 0.01 psi |
| Inlets | Up to two |
| Detectors | Up to two |
| Software | Loaded on workstation |
*OEM specifications for brand new instrument.
What “GenTech Certified” means
Refurbishment at GenTech is a defined process, not a wipe-down. Every system moves through the same five stages.
1. Disassembly and rebuild. Solution Scientists strip the instrument down, clean each module inside and out, and rebuild it from the frame up. They replace pump seals, pistons, and check valves to specification.
2. Configuration and new parts. Solution Scientists install the options and modules you selected and fit new wear parts throughout. They replace the detector lamp with a new one and reset the lamp hours.
3. Diagnostic and performance testing. Solution Scientists tune and calibrate the instrument, run system diagnostics, and confirm detector wavelength accuracy. They test full-system pressure and gradient performance against OEM and published benchmarks using known reference chemicals.
4. Data package you approve before shipment. The verification data goes to you for approval before the system leaves the bench. You see exactly how the instrument performs before it ships.
5. Delivery and installation. The instrument ships in protective packing with a one-year warranty option and professional installation available from a GenTech Solution Scientist.
Labs that run this system
The 7820 is method-compatible across the techniques most regulated and research labs run every day. These are the application areas buyers ask about most.
Hydrocarbons and fuels
Solvents and fatty acids
Permanent and fixed gases
Pesticides and halogenated compounds
Nitrogen and phosphorus pesticides
Sulfur and phosphorus compounds
Volatiles and semivolatiles
Residual solvents confirmation
Pesticides and terpenes
| Condition | Refurbished |
|---|---|
| Model | 5975, 7820 |
| OEM | Agilent Technologies |
| Financing | Financing Options Available |
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Need a single detector instead?
Chimney won’t light or expanding an existing system? Every part in this system is available individually, in stock and performance-verified.
