Agilent 7820 Gas Chromatograph (Refurbished)

Overview

The Agilent 7820 Gas Chromatograph is a robust, entry-level laboratory GC system engineered for routine quantitative and qualitative analysis in regulated and non-regulated environments. Built on Agilent’s proven pneumatic and thermal architecture, the 7820 employs temperature-programmed capillary column separation coupled with flame ionization detection (FID) to deliver high reproducibility and baseline stability across diverse sample matrices. Its modular design supports flexible configuration—including single-channel operation with integrated oven, inlet, detector, and electronic pressure control (EPC)—making it suitable for applications ranging from hydrocarbon profiling in petrochemical samples to residual solvent analysis in pharmaceutical intermediates. Unlike research-grade platforms, the 7820 prioritizes operational reliability, ease of maintenance, and compliance-ready functionality without compromising core chromatographic performance metrics such as retention time precision (<0.02 min RSD) and peak area repeatability (<1.5% RSD).

Key Features

• Electronic Pressure Control (EPC) with dual-channel capability for precise, programmable carrier gas flow and split/splitless inlet pressure management
• Temperature-controlled oven with rapid ramp rates (up to 75 °C/min) and stable isothermal hold accuracy (±0.1 °C)
• Programmable split/splitless inlet with cool-on-column and on-column injection options for thermally labile compounds
• FID detector with linear dynamic range >10⁷ and detection limit ≤1.8 pg C/sec (as hexadecane)
• Integrated hardware diagnostics and real-time status monitoring via front-panel LCD and Agilent OpenLAB CDS interface
• Pre-configured method templates aligned with common pharmacopeial and environmental test protocols (e.g., USP , EPA Method 8260)

Sample Compatibility & Compliance

The 7820 accommodates volatile and semi-volatile organic compounds (VOCs/SVOCs) across matrices including aqueous extracts, organic solvents, headspace vapors, and gaseous standards. It supports standard 0.25–0.53 mm i.d. fused-silica capillary columns (e.g., DB-5ms, HP-INNOWAX, DB-624) and is validated for use with ASTM D3606 (gasoline hydrocarbons), ISO 10301 (industrial solvents), and USP (chromatographic system suitability). When deployed with OpenLAB CDS in audit-trail-enabled mode, the system meets GLP and GMP documentation requirements—including electronic signatures, user access controls, and full data integrity traceability per FDA 21 CFR Part 11. All refurbished units undergo full functional verification against Agilent’s factory acceptance criteria, including leak testing, detector sensitivity calibration, and retention index validation.

Software & Data Management

Data acquisition, processing, and reporting are managed through Agilent OpenLAB CDS (ChemStation Edition or OpenLAB ECM), supporting both standalone and networked deployment. The software provides automated system suitability testing (SST), peak integration with customizable baselines, and customizable report generation compliant with LIMS export formats (e.g., CSV, PDF/A, XML). Audit trail functionality records all method edits, sequence changes, and result modifications with timestamps and operator IDs. For laboratories operating under regulated quality systems, optional 21 CFR Part 11 modules enable role-based permissions, electronic signatures, and encrypted database archiving—ensuring long-term data integrity and regulatory readiness.

Applications

• Pharmaceutical QC: Residual solvent analysis per ICH Q3C guidelines using headspace-GC/FID
• Environmental testing: BTEX, PAHs, and chlorinated hydrocarbons in soil/water per EPA Methods 8260 and 8021
• Petrochemical QA: Hydrocarbon group-type analysis (saturates, olefins, aromatics) in fuels and lubricants
• Food safety: Pesticide residue screening in fruits/vegetables and flavor compound profiling in beverages
• Academic and industrial research: Method development and transfer for new chemical entity characterization

FAQ

Is this a factory-refurbished unit or third-party refurbished?
All Agilent 7820 systems are refurbished by Agilent-certified service partners using original Agilent spare parts and calibrated against OEM specifications.
What documentation accompanies the instrument?
Each unit ships with a full refurbishment certificate, calibration report (traceable to NIST standards), system verification protocol, and updated firmware/software installation media.
Can the 7820 be upgraded to support mass spectrometry detection?
No—the 7820 platform is not designed for GC/MS coupling; it is a dedicated GC-FID system. For hyphenated analysis, Agilent 7890 or 8890 series instruments are recommended.
Does the system include preventive maintenance training?
Yes—standard delivery includes on-site or remote operator training covering daily startup/shutdown, column conditioning, FID optimization, and basic troubleshooting.
What warranty is provided on refurbished units?
A 12-month comprehensive parts-and-labor warranty is included, extendable to 24 months with Agilent Care service plan enrollment.