Agilent 7820A Gas Chromatograph (Refurbished, Certified Pre-Owned)

Overview

The Agilent 7820A Gas Chromatograph is a robust, entry-level benchtop GC system engineered for routine qualitative and quantitative analysis in mid-throughput laboratory environments. Built on Agilent’s proven electronic pressure control (EPC) architecture, the 7820A delivers precise, reproducible carrier gas flow and pressure regulation across all operational modes—ensuring retention time stability, peak symmetry, and method transferability between instruments. Its modular design integrates a thermally stable oven (operable from 4 °C above ambient to 350 °C), a high-precision SSL inlet capable of split ratios up to 10,000:1 and splitless purge timing down to 0.01 min, and a flame ionization detector (FID) with linear dynamic range exceeding 10⁷ and detection limit < 3 pg C/s (using n-decane). This refurbished unit has undergone full functional validation—including baseline noise assessment, retention time repeatability (RSD < 0.05% over 10 injections), and detector sensitivity verification—per Agilent’s official GC Performance Verification Procedure (PVP), and is certified for immediate deployment in regulated and non-regulated settings.

Key Features

• Agilent-certified refurbished unit with documented service history and full EPC calibration log
• Thermostatically controlled column oven with ramp rates up to 120 °C/min and temperature stability ±0.01 °C
• Split/splitless (SSL) inlet with electronic pressure tuning, real-time pressure monitoring, and automated leak check capability
• FID detector featuring ceramic jet, optimized air/hydrogen flow control, and auto-ignition with flame status feedback
• Integrated 7693A Autoinjector compatibility (optional add-on; not included in base configuration)
• Embedded web server interface for remote diagnostics, firmware updates, and instrument status monitoring via standard Ethernet
• Compliant with Agilent OpenLab CDS software architecture (v2.3 or later), supporting audit trail, electronic signatures, and 21 CFR Part 11 readiness when deployed in validated environments

Sample Compatibility & Compliance

The 7820A supports capillary column formats (0.1–0.53 mm ID, up to 60 m length) and accommodates common stationary phases including DB-5ms, HP-INNOWAX, and DB-1701. It is routinely employed for residual solvent analysis (ICH Q3C), hydrocarbon profiling (ASTM D3606, D5599), pesticide residue screening (AOAC 2007.01), and volatile organic compound (VOC) quantification in environmental water and soil extracts (EPA Method 8260D). All refurbished units are verified against ISO/IEC 17025-aligned internal acceptance criteria, including system suitability testing per USP , and include a Certificate of Analysis documenting baseline noise (< 0.05 pA), retention time RSD (< 0.08%), and area count RSD (< 1.2%) using certified reference standards.

Software & Data Management

This system operates natively with Agilent OpenLab CDS (ChemStation Edition or CDS v2.x), enabling full method development, sequence management, peak integration, and report generation. The software supports GLP/GMP workflows through configurable audit trails, user access levels, electronic signature enforcement, and secure data archiving. Raw data files (.D format) are fully compliant with long-term archival requirements and interoperable with third-party data review tools. Instrument control parameters—including inlet pressure, oven program, detector gain, and valve timing—are stored within method files and protected by checksum integrity checks. Optional connectivity to LIMS via ASTM E1384 or HL7 interfaces is supported through OpenLab’s middleware layer.

Applications

• Quality control of pharmaceutical excipients and active ingredients (residual solvents, assay purity)
• Environmental monitoring of BTEX, PAHs, and chlorinated hydrocarbons in groundwater and wastewater
• Food safety testing for flavor volatiles, adulterants, and packaging migration compounds
• Petrochemical analysis of gasoline fractions, diesel distillates, and refinery process streams
• Academic research requiring reliable, low-maintenance GC platforms for method development and teaching laboratories

FAQ

Is this instrument supplied with original Agilent documentation and calibration certificates?
Yes—each unit includes scanned copies of the original factory shipment documents, service logs from prior ownership, and a newly issued Certificate of Performance Verification signed by our ISO 17025-accredited technical staff.
Can the 7820A be upgraded to support additional detectors (e.g., TCD or ECD)?
The 7820A chassis supports field-installation of TCD and ECD modules; however, detector upgrades require separate purchase, mechanical installation, and post-installation qualification per Agilent Application Note 5991-8672EN.
What level of technical support is provided during the warranty period?
Our 6-month warranty covers parts, labor, and remote troubleshooting via screen-sharing sessions. On-site service is available globally under separate service agreement terms.
Does the system meet FDA 21 CFR Part 11 requirements out-of-the-box?
The hardware and OpenLab CDS software are Part 11–capable; full compliance requires site-specific configuration, user training, and documented validation protocol execution by the end-user’s QA department.
Are consumables (columns, septa, liners) included with the instrument?
No—consumables are sold separately. We maintain inventory of Agilent-certified GC consumables and can supply starter kits upon request.