Agilent 6850N Networked Gas Chromatograph with FID and Split/Splitless Injector

Overview

The Agilent 6850N Networked Gas Chromatograph is a compact, single-channel, high-reliability GC platform engineered for routine quantitative analysis in regulated and non-regulated laboratory environments. Based on the proven architecture of the Agilent 6890N series, the 6850N delivers equivalent chromatographic performance—including precise temperature programming, stable flow control, and robust detector response—within a footprint reduced by approximately 50%. Its core measurement principle relies on gas-phase separation of volatile and semi-volatile compounds via capillary column partitioning, followed by selective detection using flame ionization. The system operates under electronic pressure control (EPC), ensuring reproducible retention times and peak areas across repeated injections. Designed for network integration from inception, the 6850N features a built-in 10/100Base-T Ethernet interface compliant with TCP/IP protocols, enabling remote instrument monitoring, method deployment, and status reporting via LAN or intranet infrastructure.

Key Features

• Compact form factor (half-width design) optimized for benchtop space efficiency without compromising thermal stability or flow precision.
• Split/splitless injector (SSI) with fully electronic pressure and flow control—supports pressure pulse mode and solvent venting for enhanced sensitivity and reproducibility.
• FID detector with auto-ignition, continuous flame monitoring, and automatic re-ignition upon flame-out—minimizing operator intervention and downtime.
• Column oven with rapid heating/cooling rates, programmable ramping (up to 120 °C/min), and column bleed compensation algorithms to maintain baseline stability during high-temperature runs.
• Local six-button dual-line display interface for real-time run control, diagnostic feedback, and parameter adjustment without PC dependency.
• Integrated LAN connectivity supporting standard Agilent ChemStation software communication, remote diagnostics, and centralized fleet management in multi-instrument labs.

Sample Compatibility & Compliance

The 6850N accommodates a broad range of volatile organic compounds (VOCs), hydrocarbons, pesticides, residual solvents, and environmental contaminants when paired with appropriate capillary columns (50–530 µm ID). It meets fundamental operational requirements for compliance with ASTM D3606, EPA Method 8021B, and ISO 10301 for hydrocarbon analysis. While the unit itself is not pre-certified for 21 CFR Part 11, its data acquisition architecture supports audit-trail-enabled software configurations (e.g., ChemStation with security patches) suitable for GLP and GMP-aligned workflows when deployed with validated methods and controlled access protocols. All refurbished units undergo full functional verification per Agilent’s original factory specifications, including leak testing, temperature calibration, and detector linearity assessment.

Software & Data Management

The system is compatible with Agilent ChemStation Rev. A.03.04 or later, providing full method development, sequence control, peak integration, calibration curve generation, and report export (PDF, CSV, XML). Raw data files (.D format) are stored locally on the connected PC and support retrospective reprocessing. For laboratories requiring electronic records integrity, optional ChemStation configurations include user authentication, electronic signatures, and audit trail logging—enabling alignment with FDA 21 CFR Part 11 Annex 11 and ISO/IEC 17025 documentation requirements. Instrument status logs, error codes, and maintenance history are automatically archived and retrievable for internal QA reviews or regulatory inspections.

Applications

• Environmental testing: BTEX, PAHs, chlorinated solvents in soil/water extracts.
• Petrochemical QA/QC: Hydrocarbon group-type analysis (PIONA), gasoline oxygenates, distillation profile correlation.
• Pharmaceutical residual solvent testing per ICH Q3C guidelines.
• Food & flavor analysis: Volatile aroma compounds, ethanol content, pesticide screening.
• Academic and contract research laboratories requiring reliable, low-maintenance GC platforms with legacy method compatibility.

FAQ

Is this unit supplied with original Agilent documentation and calibration certificates?
Yes—each refurbished 6850N includes a full set of scanned service manuals, original firmware revision logs, and a post-refurbishment performance verification report covering injector linearity, oven temperature accuracy, FID sensitivity, and EPC stability.
Can the system be upgraded to support additional detectors or autosamplers?
The 6850N chassis supports mechanical and electrical integration of Agilent G1530A autosamplers and optional detectors (e.g., TCD, ECD) provided the required power, gas, and signal interfaces are available; retrofit feasibility is confirmed during pre-sale technical review.
What does the 6-month warranty cover?
The warranty covers parts and labor for defects in materials or workmanship under normal laboratory use, excluding consumables (septa, liners, columns), misuse, or damage from improper gas supply or voltage fluctuations.
Is remote support available after purchase?
Yes—Spectralab provides post-delivery technical assistance via secure remote desktop sessions, email-based troubleshooting, and priority access to firmware updates and known-issue bulletins.