The Agilent 7890B is a high-performance gas chromatograph designed for precise, reproducible, and robust GC analysis. The offered configuration includes a Split/Splitless (S/SL) inlet, Flame Ionization Detector (FID), and is prepared for integration with a compatible headspace sampling system. This configuration supports both conventional liquid injection and automated headspace GC workflows for volatile compounds.
The 7890B platform combines advanced electronic pneumatic control (EPC), precise oven temperature control, and integrated diagnostic capabilities. Under defined test conditions, Agilent specifies retention-time repeatability of <0.008% or <0.0008 min and area repeatability of <1% RSD.
Offered Configuration
- Agilent 7890B Gas Chromatograph
- Split/Splitless inlet
- Flame Ionization Detector
- Headspace Ready
- Electronic Pneumatic Control EPC
Note: “Headspace Ready” indicates that the GC is prepared for integration into a headspace workflow. A separate headspace sampler is not included.
Split/Splitless Inlet
- Compatible with 50–530 µm ID capillary columns
- Maximum temperature: 400 °C
- Split ratios up to 7500:1
- Splitless mode for trace analysis
- Pulsed splitless capability
- Electronic septum purge control
- Gas Saver mode
- EPC pressure ranges up to 100/150 psig depending on configuration
- Total flow:
- N₂: 0–200 mL/min
- H₂/He: 0–1250 mL/min.
Headspace-Ready Operation
The configuration can be integrated with a compatible headspace sampler for automated analysis of volatile compounds in the sample headspace.
Typical applications include:
- residual solvents
- VOCs
- flavors and aromas
- alcohols and other volatile compounds
- pharmaceuticals
- food and beverage samples
- polymers and packaging materials
- environmental samples
The 7890B supports remote start/stop and external automated sampling control.
Flame Ionization Detector
- Minimum detectable level, tridecane: <1.4 pg C/s
- Linear dynamic range: >10⁷
- Maximum acquisition rate: 500 Hz
- Maximum temperature: 450 °C
- EPC gas ranges:
- air: 0–800 mL/min
- H₂: 0–100 mL/min
- makeup gas: 0–100 mL/min
- Flameout detection
- Automatic reignition.
GC Oven
- Maximum temperature: 450 °C
- Up to 20 temperature ramps
- 21 plateaus
- Temperature resolution: 0.1 °C
- Maximum heating rate: up to 120 °C/min
- Maximum run time: 999.99 min
- Cool-down 450 → 50 °C: approx. 4 min
- Optional cryogenic operation:
- LN₂ to −80 °C
- CO₂ to −40 °C.
Electronic Pneumatic Control
- Typical pressure control: ±0.001 psi
- Pressure setting resolution:
- 0.001 psi below 100 psi
- 0.01 psi above 100 psi
- Column control modes:
- constant pressure
- ramped pressure
- constant flow
- ramped flow
- Supported gases include He, H₂, N₂, and argon/methane depending on configuration.
Technical Specifications
- Inlet Configuration: Split/Splitless
- Headspace: Ready
- Detector: FID
- Maximum S/SL Temperature: 400 °C
- Maximum Split Ratio: 7500:1
- Maximum FID Temperature: 450 °C
- FID MDL: <1.4 pg C/s
- FID Dynamic Range: >10⁷
- FID Acquisition Rate: up to 500 Hz
- Maximum Oven Temperature: 450 °C
- Maximum Oven Ramps: 20
- Maximum Heating Rate: up to 120 °C/min
- Temperature Resolution: 0.1 °C
- Retention-Time Repeatability: <0.008% or <0.0008 min
- Area Repeatability: <1% RSD
- Communications: LAN, remote start/stop
- Dimensions (H × W × D): approx. 49 × 58 × 51 cm
- Typical Weight: 49 kg
- Operating Temperature: 15–35 °C
- Power: 120/200/220/230/240 V ±10%
Typical Applications
- Headspace GC
- Residual solvents
- VOC and SVOC analysis
- Pharmaceutical QC
- Food and beverage analysis
- Flavors and fragrances
- Petrochemical analysis
- Solvents and chemicals
- Polymers and packaging materials
- Environmental analysis
- Routine quantitative GC-FID
