Agilent 6890N Used Gas Chromatograph
| Brand | Agilent Technologies |
|---|---|
| Origin | USA |
| Model | 6890N |
| Detector Options | FID (detection limit <5 pg C/s on propane), TCD, ECD, NPD, FPD, FTD |
| Oven Temperature Range | +4 °C above ambient to 450 °C |
| Inlet Pressure Range | 0–100 psi (optional 0–150 psi) |
| Carrier Gas Flow Range | 0–200 mL/min (N₂), 0–1000 mL/min (H₂ or He) |
| Integrated Control | Agilent 7683 Autoinjector |
| Compliance | ASTM D3606, D5503, ISO 10301, USP <621>, FDA 21 CFR Part 11 ready (with ChemStation Plus configuration) |
Overview
The Agilent 6890N is a high-performance, modular gas chromatograph originally engineered for robust routine analysis in regulated and research laboratories. Built upon Agilent’s proven dual-beam oven architecture and precision pneumatic control system, the 6890N employs capillary column separation coupled with selective detection to resolve complex volatile and semi-volatile organic mixtures. Its core measurement principle relies on differential partitioning of analytes between a mobile phase (inert carrier gas—He, H₂, or N₂) and a stationary phase coated inside fused-silica capillary columns, followed by quantitative detection via ionization (FID), electron capture (ECD), thermal conductivity (TCD), or element-specific mechanisms (FPD, NPD). Designed for long-term operational stability, the 6890N features a thermally insulated oven with ±0.01 °C temperature stability over time and programmable ramp rates up to 120 °C/min—enabling method transfer compatibility across legacy and modern GC platforms.
Key Features
- Temperature-controlled oven with precise ramping (0.1–120 °C/min) and isothermal hold capability; operating range from +4 °C above ambient to 450 °C
- Dual independent inlet modules supporting split/splitless injection (0–100 psi standard, 0–150 psi optional), packed-column, on-column, PTV, and headspace-ready configurations
- High-precision electronic pressure control (EPC) for reproducible flow and pressure delivery across all carrier gases
- Multiple detector compatibility: factory-integrated FID with <5 pg C/s detection limit (propane); field-upgradable TCD, ECD, NPD, FPD, and FTD
- Enhanced FPD with 5× higher sulfur sensitivity and 10× higher phosphorus sensitivity versus prior-generation designs
- Built-in Agilent 7683 autoinjector control interface—enables seamless integration with standard 100- or 150-position trays
- Optional ancillary modules: headspace samplers (e.g., G1888), purge-and-trap systems (e.g., 5183-4470), and valve-based interfaces for process stream analysis
Sample Compatibility & Compliance
The 6890N accommodates a broad spectrum of sample matrices—including environmental water and soil extracts, petrochemical distillates, pharmaceutical residual solvents, food flavor volatiles, and forensic toxicology specimens—when paired with appropriate column chemistries (e.g., DB-5ms, HP-INNOWAX, DB-VRX) and detector selection. It meets key regulatory performance criteria outlined in ASTM D3606 (benzene/toluene in gasoline), ASTM D5503 (hydrocarbon speciation), ISO 10301 (water analysis), and USP (chromatographic separations). When configured with ChemStation Plus software and audit-trail-enabled hardware, the system supports GLP/GMP workflows compliant with FDA 21 CFR Part 11 requirements—including electronic signatures, user access levels, and immutable data archiving.
Software & Data Management
Data acquisition and processing are managed through Agilent ChemStation Plus—a validated, network-capable platform supporting method development, sequence execution, peak integration, calibration curve generation, and report export (PDF, CSV, XML). Optional ChemStore C/S provides centralized instrument control and raw data repository functions across multi-GC labs. For petroleum QA/QC environments, Cerity Network Data System offers preconfigured templates aligned with ASTM and IP test methods. All software versions include full audit trail logging, user-defined permissions, and secure database backup protocols—ensuring traceability from injection to final report.
Applications
- Environmental testing: VOCs in drinking water (EPA Method 524.2), pesticides in soil (EPA Method 8081B), PAHs in sediment (EPA Method 8270D)
- Petrochemical analysis: hydrocarbon type analysis (HTA), simulated distillation (ASTM D2887), oxygenates in gasoline (ASTM D4815)
- Pharmaceutical QC: residual solvent profiling per ICH Q3C guidelines using headspace-GC/FID
- Food & flavor: quantification of aldehydes, esters, and terpenes in essential oils and beverages
- Forensics: blood alcohol determination (headspace-GC/FID), drug metabolite screening (GC/MS coupling)
FAQ
Is the 6890N compatible with modern Agilent data systems?
Yes—when equipped with a supported LAN interface and updated firmware, it integrates natively with OpenLab CDS and retains backward compatibility with ChemStation 7.x and Cerity.
What maintenance documentation is provided with used units?
Each unit undergoes full functional verification including oven calibration, detector baseline noise assessment, leak testing, and EPC linearity validation; comprehensive service history and calibration certificates are supplied.
Can this system be upgraded to support mass spectrometry?
The 6890N features a standard MS interface port and vacuum-compatible oven design—enabling direct coupling to Agilent 5973N or third-party quadrupole MS detectors with appropriate interface kits.
Are consumables and spare parts still available?
All major consumables—including inlet liners, septa, ferrules, columns, and detector components—are actively stocked by Agilent and authorized partners globally.
Does the system include installation and qualification support?
Yes—IQ/OQ protocols aligned with ISO/IEC 17025 and GxP standards are available; on-site installation, operational verification, and staff training can be arranged through certified field engineers.
